Home / 8,125.56-12,188.88-2,861.28

Finding the Fourth Proportional to 8,125.56, 12,188.88 and 2,861.28

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Solution

The fourth proportional to 8,125.56, 12,188.88 and 2,861.28 is: 4,292.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.56 : 12,188.88 = 2,861.28 : x
  2. Step 2: Convert to fraction form
    8,125.56/12,188.88 = 2,861.28/x
  3. Step 3: Cross multiply
    8,125.56x = 12,188.88 × 2,861.28
  4. Step 4: Simplify right side
    8,125.56x = 34,875,798.57
  5. Step 5: Solve for x
    x = 34,875,798.57/8,125.56
  6. Step 6: Final answer
    x = 4,292.11

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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.