Home / 7,999.12-11,031.27-6,324.52

Finding the Fourth Proportional to 7,999.12, 11,031.27 and 6,324.52

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Solution

The fourth proportional to 7,999.12, 11,031.27 and 6,324.52 is: 8,721.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,999.12 : 11,031.27 = 6,324.52 : x
  2. Step 2: Convert to fraction form
    7,999.12/11,031.27 = 6,324.52/x
  3. Step 3: Cross multiply
    7,999.12x = 11,031.27 × 6,324.52
  4. Step 4: Simplify right side
    7,999.12x = 69,767,487.74
  5. Step 5: Solve for x
    x = 69,767,487.74/7,999.12
  6. Step 6: Final answer
    x = 8,721.90

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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.