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Finding the Fourth Proportional to 5,916.20, 8,866.76 and 3,144.20

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Solution

The fourth proportional to 5,916.20, 8,866.76 and 3,144.20 is: 4,712.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,916.20 : 8,866.76 = 3,144.20 : x
  2. Step 2: Convert to fraction form
    5,916.20/8,866.76 = 3,144.20/x
  3. Step 3: Cross multiply
    5,916.20x = 8,866.76 × 3,144.20
  4. Step 4: Simplify right side
    5,916.20x = 27,878,874.65
  5. Step 5: Solve for x
    x = 27,878,874.65/5,916.20
  6. Step 6: Final answer
    x = 4,712.29

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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.