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Finding the Fourth Proportional to 7,000.80, 10,490.40 and 5,899.20

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Solution

The fourth proportional to 7,000.80, 10,490.40 and 5,899.20 is: 8,839.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.80 : 10,490.40 = 5,899.20 : x
  2. Step 2: Convert to fraction form
    7,000.80/10,490.40 = 5,899.20/x
  3. Step 3: Cross multiply
    7,000.80x = 10,490.40 × 5,899.20
  4. Step 4: Simplify right side
    7,000.80x = 61,884,967.68
  5. Step 5: Solve for x
    x = 61,884,967.68/7,000.80
  6. Step 6: Final answer
    x = 8,839.70

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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.