Home / 8,071.18-11,138.92-4,715.07

Finding the Fourth Proportional to 8,071.18, 11,138.92 and 4,715.07

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Solution

The fourth proportional to 8,071.18, 11,138.92 and 4,715.07 is: 6,507.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,071.18 : 11,138.92 = 4,715.07 : x
  2. Step 2: Convert to fraction form
    8,071.18/11,138.92 = 4,715.07/x
  3. Step 3: Cross multiply
    8,071.18x = 11,138.92 × 4,715.07
  4. Step 4: Simplify right side
    8,071.18x = 52,520,747.89
  5. Step 5: Solve for x
    x = 52,520,747.89/8,071.18
  6. Step 6: Final answer
    x = 6,507.20

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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.