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Finding the Fourth Proportional to 8,237.40, 12,320.10 and 7,366.20

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Solution

The fourth proportional to 8,237.40, 12,320.10 and 7,366.20 is: 11,017.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237.40 : 12,320.10 = 7,366.20 : x
  2. Step 2: Convert to fraction form
    8,237.40/12,320.10 = 7,366.20/x
  3. Step 3: Cross multiply
    8,237.40x = 12,320.10 × 7,366.20
  4. Step 4: Simplify right side
    8,237.40x = 90,752,320.62
  5. Step 5: Solve for x
    x = 90,752,320.62/8,237.40
  6. Step 6: Final answer
    x = 11,017.11

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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.