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Finding the Fourth Proportional to 8,702.70, 13,031.96 and 7,293.41

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Solution

The fourth proportional to 8,702.70, 13,031.96 and 7,293.41 is: 10,921.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.70 : 13,031.96 = 7,293.41 : x
  2. Step 2: Convert to fraction form
    8,702.70/13,031.96 = 7,293.41/x
  3. Step 3: Cross multiply
    8,702.70x = 13,031.96 × 7,293.41
  4. Step 4: Simplify right side
    8,702.70x = 95,047,427.38
  5. Step 5: Solve for x
    x = 95,047,427.38/8,702.70
  6. Step 6: Final answer
    x = 10,921.60

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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.