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Finding the Fourth Proportional to 8,890.90, 12,269.30 and 6,343.34

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Solution

The fourth proportional to 8,890.90, 12,269.30 and 6,343.34 is: 8,753.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,890.90 : 12,269.30 = 6,343.34 : x
  2. Step 2: Convert to fraction form
    8,890.90/12,269.30 = 6,343.34/x
  3. Step 3: Cross multiply
    8,890.90x = 12,269.30 × 6,343.34
  4. Step 4: Simplify right side
    8,890.90x = 77,828,248.40
  5. Step 5: Solve for x
    x = 77,828,248.40/8,890.90
  6. Step 6: Final answer
    x = 8,753.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.