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Finding the Fourth Proportional to 1,742.71, 2,404.99 and 956.79

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Solution

The fourth proportional to 1,742.71, 2,404.99 and 956.79 is: 1,320.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,742.71 : 2,404.99 = 956.79 : x
  2. Step 2: Convert to fraction form
    1,742.71/2,404.99 = 956.79/x
  3. Step 3: Cross multiply
    1,742.71x = 2,404.99 × 956.79
  4. Step 4: Simplify right side
    1,742.71x = 2,301,070.38
  5. Step 5: Solve for x
    x = 2,301,070.38/1,742.71
  6. Step 6: Final answer
    x = 1,320.40

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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.