Home / 8,237.40-12,331.80-7,756.80

Finding the Fourth Proportional to 8,237.40, 12,331.80 and 7,756.80

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Solution

The fourth proportional to 8,237.40, 12,331.80 and 7,756.80 is: 11,612.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,237.40 : 12,331.80 = 7,756.80 : x
  2. Step 2: Convert to fraction form
    8,237.40/12,331.80 = 7,756.80/x
  3. Step 3: Cross multiply
    8,237.40x = 12,331.80 × 7,756.80
  4. Step 4: Simplify right side
    8,237.40x = 95,655,306.24
  5. Step 5: Solve for x
    x = 95,655,306.24/8,237.40
  6. Step 6: Final answer
    x = 11,612.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.