Home / 8,621.66-12,930.13-2,380.18

Finding the Fourth Proportional to 8,621.66, 12,930.13 and 2,380.18

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Solution

The fourth proportional to 8,621.66, 12,930.13 and 2,380.18 is: 3,569.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,621.66 : 12,930.13 = 2,380.18 : x
  2. Step 2: Convert to fraction form
    8,621.66/12,930.13 = 2,380.18/x
  3. Step 3: Cross multiply
    8,621.66x = 12,930.13 × 2,380.18
  4. Step 4: Simplify right side
    8,621.66x = 30,776,036.82
  5. Step 5: Solve for x
    x = 30,776,036.82/8,621.66
  6. Step 6: Final answer
    x = 3,569.62

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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.