Home / 1,787.34-2,681.13-554.58

Finding the Fourth Proportional to 1,787.34, 2,681.13 and 554.58

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Solution

The fourth proportional to 1,787.34, 2,681.13 and 554.58 is: 831.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,787.34 : 2,681.13 = 554.58 : x
  2. Step 2: Convert to fraction form
    1,787.34/2,681.13 = 554.58/x
  3. Step 3: Cross multiply
    1,787.34x = 2,681.13 × 554.58
  4. Step 4: Simplify right side
    1,787.34x = 1,486,901.08
  5. Step 5: Solve for x
    x = 1,486,901.08/1,787.34
  6. Step 6: Final answer
    x = 831.91

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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.