Home / 8,909.03-12,295.76-5,131.46

Finding the Fourth Proportional to 8,909.03, 12,295.76 and 5,131.46

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Solution

The fourth proportional to 8,909.03, 12,295.76 and 5,131.46 is: 7,082.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,909.03 : 12,295.76 = 5,131.46 : x
  2. Step 2: Convert to fraction form
    8,909.03/12,295.76 = 5,131.46/x
  3. Step 3: Cross multiply
    8,909.03x = 12,295.76 × 5,131.46
  4. Step 4: Simplify right side
    8,909.03x = 63,095,113.47
  5. Step 5: Solve for x
    x = 63,095,113.47/8,909.03
  6. Step 6: Final answer
    x = 7,082.16

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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.