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Finding the Fourth Proportional to 8,369.48, 12,545.46 and 2,820.90

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Solution

The fourth proportional to 8,369.48, 12,545.46 and 2,820.90 is: 4,228.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,369.48 : 12,545.46 = 2,820.90 : x
  2. Step 2: Convert to fraction form
    8,369.48/12,545.46 = 2,820.90/x
  3. Step 3: Cross multiply
    8,369.48x = 12,545.46 × 2,820.90
  4. Step 4: Simplify right side
    8,369.48x = 35,389,488.11
  5. Step 5: Solve for x
    x = 35,389,488.11/8,369.48
  6. Step 6: Final answer
    x = 4,228.40

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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.