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Finding the Fourth Proportional to 1,557.99, 2,149.14 and 968.16

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Solution

The fourth proportional to 1,557.99, 2,149.14 and 968.16 is: 1,335.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.99 : 2,149.14 = 968.16 : x
  2. Step 2: Convert to fraction form
    1,557.99/2,149.14 = 968.16/x
  3. Step 3: Cross multiply
    1,557.99x = 2,149.14 × 968.16
  4. Step 4: Simplify right side
    1,557.99x = 2,080,711.38
  5. Step 5: Solve for x
    x = 2,080,711.38/1,557.99
  6. Step 6: Final answer
    x = 1,335.51

Related Problems

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Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.