Home / 8,995.12-12,395.71-6,472.78

Finding the Fourth Proportional to 8,995.12, 12,395.71 and 6,472.78

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Solution

The fourth proportional to 8,995.12, 12,395.71 and 6,472.78 is: 8,919.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,995.12 : 12,395.71 = 6,472.78 : x
  2. Step 2: Convert to fraction form
    8,995.12/12,395.71 = 6,472.78/x
  3. Step 3: Cross multiply
    8,995.12x = 12,395.71 × 6,472.78
  4. Step 4: Simplify right side
    8,995.12x = 80,234,703.77
  5. Step 5: Solve for x
    x = 80,234,703.77/8,995.12
  6. Step 6: Final answer
    x = 8,919.80

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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.