Home / 8,380.12-12,570.52-3,116.52

Finding the Fourth Proportional to 8,380.12, 12,570.52 and 3,116.52

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Solution

The fourth proportional to 8,380.12, 12,570.52 and 3,116.52 is: 4,674.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,380.12 : 12,570.52 = 3,116.52 : x
  2. Step 2: Convert to fraction form
    8,380.12/12,570.52 = 3,116.52/x
  3. Step 3: Cross multiply
    8,380.12x = 12,570.52 × 3,116.52
  4. Step 4: Simplify right side
    8,380.12x = 39,176,276.99
  5. Step 5: Solve for x
    x = 39,176,276.99/8,380.12
  6. Step 6: Final answer
    x = 4,674.91

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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.