Home / 1,098.17-1,639.73-935.77

Finding the Fourth Proportional to 1,098.17, 1,639.73 and 935.77

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Solution

The fourth proportional to 1,098.17, 1,639.73 and 935.77 is: 1,397.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,098.17 : 1,639.73 = 935.77 : x
  2. Step 2: Convert to fraction form
    1,098.17/1,639.73 = 935.77/x
  3. Step 3: Cross multiply
    1,098.17x = 1,639.73 × 935.77
  4. Step 4: Simplify right side
    1,098.17x = 1,534,412.48
  5. Step 5: Solve for x
    x = 1,534,412.48/1,098.17
  6. Step 6: Final answer
    x = 1,397.24

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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.