Home / 1,246.97-1,871.67-921.35

Finding the Fourth Proportional to 1,246.97, 1,871.67 and 921.35

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Solution

The fourth proportional to 1,246.97, 1,871.67 and 921.35 is: 1,382.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,246.97 : 1,871.67 = 921.35 : x
  2. Step 2: Convert to fraction form
    1,246.97/1,871.67 = 921.35/x
  3. Step 3: Cross multiply
    1,246.97x = 1,871.67 × 921.35
  4. Step 4: Simplify right side
    1,246.97x = 1,724,463.15
  5. Step 5: Solve for x
    x = 1,724,463.15/1,246.97
  6. Step 6: Final answer
    x = 1,382.92

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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.