Home / 1,557.30-2,149.44-968.28

Finding the Fourth Proportional to 1,557.30, 2,149.44 and 968.28

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Solution

The fourth proportional to 1,557.30, 2,149.44 and 968.28 is: 1,336.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,557.30 : 2,149.44 = 968.28 : x
  2. Step 2: Convert to fraction form
    1,557.30/2,149.44 = 968.28/x
  3. Step 3: Cross multiply
    1,557.30x = 2,149.44 × 968.28
  4. Step 4: Simplify right side
    1,557.30x = 2,081,259.76
  5. Step 5: Solve for x
    x = 2,081,259.76/1,557.30
  6. Step 6: Final answer
    x = 1,336.45

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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.