Home / 1,681.30-2,320.18-935.23

Finding the Fourth Proportional to 1,681.30, 2,320.18 and 935.23

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Solution

The fourth proportional to 1,681.30, 2,320.18 and 935.23 is: 1,290.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.30 : 2,320.18 = 935.23 : x
  2. Step 2: Convert to fraction form
    1,681.30/2,320.18 = 935.23/x
  3. Step 3: Cross multiply
    1,681.30x = 2,320.18 × 935.23
  4. Step 4: Simplify right side
    1,681.30x = 2,169,901.94
  5. Step 5: Solve for x
    x = 2,169,901.94/1,681.30
  6. Step 6: Final answer
    x = 1,290.61

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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.