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Finding the Fourth Proportional to 9,787.50, 14,681.25 and 3,631.50

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Solution

The fourth proportional to 9,787.50, 14,681.25 and 3,631.50 is: 5,447.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,787.50 : 14,681.25 = 3,631.50 : x
  2. Step 2: Convert to fraction form
    9,787.50/14,681.25 = 3,631.50/x
  3. Step 3: Cross multiply
    9,787.50x = 14,681.25 × 3,631.50
  4. Step 4: Simplify right side
    9,787.50x = 53,314,959.38
  5. Step 5: Solve for x
    x = 53,314,959.38/9,787.50
  6. Step 6: Final answer
    x = 5,447.25

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1.5x scale

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.