Home / 1,538.40-2,307.61-614.19

Finding the Fourth Proportional to 1,538.40, 2,307.61 and 614.19

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Solution

The fourth proportional to 1,538.40, 2,307.61 and 614.19 is: 921.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.40 : 2,307.61 = 614.19 : x
  2. Step 2: Convert to fraction form
    1,538.40/2,307.61 = 614.19/x
  3. Step 3: Cross multiply
    1,538.40x = 2,307.61 × 614.19
  4. Step 4: Simplify right side
    1,538.40x = 1,417,307.91
  5. Step 5: Solve for x
    x = 1,417,307.91/1,538.40
  6. Step 6: Final answer
    x = 921.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.