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Finding the Fourth Proportional to 7,000.20, 10,490.40 and 3,881.58

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Solution

The fourth proportional to 7,000.20, 10,490.40 and 3,881.58 is: 5,816.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,000.20 : 10,490.40 = 3,881.58 : x
  2. Step 2: Convert to fraction form
    7,000.20/10,490.40 = 3,881.58/x
  3. Step 3: Cross multiply
    7,000.20x = 10,490.40 × 3,881.58
  4. Step 4: Simplify right side
    7,000.20x = 40,719,326.83
  5. Step 5: Solve for x
    x = 40,719,326.83/7,000.20
  6. Step 6: Final answer
    x = 5,816.88

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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.