Home / 8,976.45-12,387.49-4,997.91

Finding the Fourth Proportional to 8,976.45, 12,387.49 and 4,997.91

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Solution

The fourth proportional to 8,976.45, 12,387.49 and 4,997.91 is: 6,897.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,976.45 : 12,387.49 = 4,997.91 : x
  2. Step 2: Convert to fraction form
    8,976.45/12,387.49 = 4,997.91/x
  3. Step 3: Cross multiply
    8,976.45x = 12,387.49 × 4,997.91
  4. Step 4: Simplify right side
    8,976.45x = 61,911,560.15
  5. Step 5: Solve for x
    x = 61,911,560.15/8,976.45
  6. Step 6: Final answer
    x = 6,897.11

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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.