Home / 7,938.12-11,872.20-7,066.80

Finding the Fourth Proportional to 7,938.12, 11,872.20 and 7,066.80

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Solution

The fourth proportional to 7,938.12, 11,872.20 and 7,066.80 is: 10,569.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,938.12 : 11,872.20 = 7,066.80 : x
  2. Step 2: Convert to fraction form
    7,938.12/11,872.20 = 7,066.80/x
  3. Step 3: Cross multiply
    7,938.12x = 11,872.20 × 7,066.80
  4. Step 4: Simplify right side
    7,938.12x = 83,898,462.96
  5. Step 5: Solve for x
    x = 83,898,462.96/7,938.12
  6. Step 6: Final answer
    x = 10,569.06

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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.