Home / 1,538.60-2,307.69-614.18

Finding the Fourth Proportional to 1,538.60, 2,307.69 and 614.18

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Solution

The fourth proportional to 1,538.60, 2,307.69 and 614.18 is: 921.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,538.60 : 2,307.69 = 614.18 : x
  2. Step 2: Convert to fraction form
    1,538.60/2,307.69 = 614.18/x
  3. Step 3: Cross multiply
    1,538.60x = 2,307.69 × 614.18
  4. Step 4: Simplify right side
    1,538.60x = 1,417,342.81
  5. Step 5: Solve for x
    x = 1,417,342.81/1,538.60
  6. Step 6: Final answer
    x = 921.19

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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.