Home / 1,039.15-1,551.50-935.47

Finding the Fourth Proportional to 1,039.15, 1,551.50 and 935.47

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Solution

The fourth proportional to 1,039.15, 1,551.50 and 935.47 is: 1,396.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,039.15 : 1,551.50 = 935.47 : x
  2. Step 2: Convert to fraction form
    1,039.15/1,551.50 = 935.47/x
  3. Step 3: Cross multiply
    1,039.15x = 1,551.50 × 935.47
  4. Step 4: Simplify right side
    1,039.15x = 1,451,381.71
  5. Step 5: Solve for x
    x = 1,451,381.71/1,039.15
  6. Step 6: Final answer
    x = 1,396.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.