Home / 8,331.20-12,501.60-3,140.80

Finding the Fourth Proportional to 8,331.20, 12,501.60 and 3,140.80

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Solution

The fourth proportional to 8,331.20, 12,501.60 and 3,140.80 is: 4,713.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.20 : 12,501.60 = 3,140.80 : x
  2. Step 2: Convert to fraction form
    8,331.20/12,501.60 = 3,140.80/x
  3. Step 3: Cross multiply
    8,331.20x = 12,501.60 × 3,140.80
  4. Step 4: Simplify right side
    8,331.20x = 39,265,025.28
  5. Step 5: Solve for x
    x = 39,265,025.28/8,331.20
  6. Step 6: Final answer
    x = 4,713.01

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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.