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Finding the Fourth Proportional to 10,290.70, 14,201.07 and 5,815.90

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Solution

The fourth proportional to 10,290.70, 14,201.07 and 5,815.90 is: 8,025.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,290.70 : 14,201.07 = 5,815.90 : x
  2. Step 2: Convert to fraction form
    10,290.70/14,201.07 = 5,815.90/x
  3. Step 3: Cross multiply
    10,290.70x = 14,201.07 × 5,815.90
  4. Step 4: Simplify right side
    10,290.70x = 82,592,003.01
  5. Step 5: Solve for x
    x = 82,592,003.01/10,290.70
  6. Step 6: Final answer
    x = 8,025.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.