Home / 8,863.20-12,230.40-5,085.60

Finding the Fourth Proportional to 8,863.20, 12,230.40 and 5,085.60

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Solution

The fourth proportional to 8,863.20, 12,230.40 and 5,085.60 is: 7,017.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,863.20 : 12,230.40 = 5,085.60 : x
  2. Step 2: Convert to fraction form
    8,863.20/12,230.40 = 5,085.60/x
  3. Step 3: Cross multiply
    8,863.20x = 12,230.40 × 5,085.60
  4. Step 4: Simplify right side
    8,863.20x = 62,198,922.24
  5. Step 5: Solve for x
    x = 62,198,922.24/8,863.20
  6. Step 6: Final answer
    x = 7,017.66

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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.