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Finding the Fourth Proportional to 1,557.99, 2,150.07 and 894.99

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Solution

The fourth proportional to 1,557.99, 2,150.07 and 894.99 is: 1,235.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.99 : 2,150.07 = 894.99 : x
  2. Step 2: Convert to fraction form
    1,557.99/2,150.07 = 894.99/x
  3. Step 3: Cross multiply
    1,557.99x = 2,150.07 × 894.99
  4. Step 4: Simplify right side
    1,557.99x = 1,924,291.15
  5. Step 5: Solve for x
    x = 1,924,291.15/1,557.99
  6. Step 6: Final answer
    x = 1,235.11

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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.