Home / 8,331.12-12,487.20-2,783.16

Finding the Fourth Proportional to 8,331.12, 12,487.20 and 2,783.16

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Solution

The fourth proportional to 8,331.12, 12,487.20 and 2,783.16 is: 4,171.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,331.12 : 12,487.20 = 2,783.16 : x
  2. Step 2: Convert to fraction form
    8,331.12/12,487.20 = 2,783.16/x
  3. Step 3: Cross multiply
    8,331.12x = 12,487.20 × 2,783.16
  4. Step 4: Simplify right side
    8,331.12x = 34,753,875.55
  5. Step 5: Solve for x
    x = 34,753,875.55/8,331.12
  6. Step 6: Final answer
    x = 4,171.57

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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.