Home / 1,787.43-2,681.33-617.40

Finding the Fourth Proportional to 1,787.43, 2,681.33 and 617.40

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Solution

The fourth proportional to 1,787.43, 2,681.33 and 617.40 is: 926.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.43 : 2,681.33 = 617.40 : x
  2. Step 2: Convert to fraction form
    1,787.43/2,681.33 = 617.40/x
  3. Step 3: Cross multiply
    1,787.43x = 2,681.33 × 617.40
  4. Step 4: Simplify right side
    1,787.43x = 1,655,450.06
  5. Step 5: Solve for x
    x = 1,655,450.06/1,787.43
  6. Step 6: Final answer
    x = 926.16

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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.