Home / 8,906.12-12,290.50-5,180.12

Finding the Fourth Proportional to 8,906.12, 12,290.50 and 5,180.12

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Solution

The fourth proportional to 8,906.12, 12,290.50 and 5,180.12 is: 7,148.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,906.12 : 12,290.50 = 5,180.12 : x
  2. Step 2: Convert to fraction form
    8,906.12/12,290.50 = 5,180.12/x
  3. Step 3: Cross multiply
    8,906.12x = 12,290.50 × 5,180.12
  4. Step 4: Simplify right side
    8,906.12x = 63,666,264.86
  5. Step 5: Solve for x
    x = 63,666,264.86/8,906.12
  6. Step 6: Final answer
    x = 7,148.60

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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.