Home / 8,853.60-12,219.15-5,718.90

Finding the Fourth Proportional to 8,853.60, 12,219.15 and 5,718.90

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Solution

The fourth proportional to 8,853.60, 12,219.15 and 5,718.90 is: 7,892.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,853.60 : 12,219.15 = 5,718.90 : x
  2. Step 2: Convert to fraction form
    8,853.60/12,219.15 = 5,718.90/x
  3. Step 3: Cross multiply
    8,853.60x = 12,219.15 × 5,718.90
  4. Step 4: Simplify right side
    8,853.60x = 69,880,096.94
  5. Step 5: Solve for x
    x = 69,880,096.94/8,853.60
  6. Step 6: Final answer
    x = 7,892.85

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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.