Home / 7,475.40-11,213.10-5,142.60

Finding the Fourth Proportional to 7,475.40, 11,213.10 and 5,142.60

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Solution

The fourth proportional to 7,475.40, 11,213.10 and 5,142.60 is: 7,713.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,475.40 : 11,213.10 = 5,142.60 : x
  2. Step 2: Convert to fraction form
    7,475.40/11,213.10 = 5,142.60/x
  3. Step 3: Cross multiply
    7,475.40x = 11,213.10 × 5,142.60
  4. Step 4: Simplify right side
    7,475.40x = 57,664,488.06
  5. Step 5: Solve for x
    x = 57,664,488.06/7,475.40
  6. Step 6: Final answer
    x = 7,713.90

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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.