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Finding the Fourth Proportional to 7,002.90, 10,520.55 and 4,815.90

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Solution

The fourth proportional to 7,002.90, 10,520.55 and 4,815.90 is: 7,234.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,002.90 : 10,520.55 = 4,815.90 : x
  2. Step 2: Convert to fraction form
    7,002.90/10,520.55 = 4,815.90/x
  3. Step 3: Cross multiply
    7,002.90x = 10,520.55 × 4,815.90
  4. Step 4: Simplify right side
    7,002.90x = 50,665,916.75
  5. Step 5: Solve for x
    x = 50,665,916.75/7,002.90
  6. Step 6: Final answer
    x = 7,234.99

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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.