Home / 8,345.60-12,520.08-3,080.65

Finding the Fourth Proportional to 8,345.60, 12,520.08 and 3,080.65

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Solution

The fourth proportional to 8,345.60, 12,520.08 and 3,080.65 is: 4,621.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,345.60 : 12,520.08 = 3,080.65 : x
  2. Step 2: Convert to fraction form
    8,345.60/12,520.08 = 3,080.65/x
  3. Step 3: Cross multiply
    8,345.60x = 12,520.08 × 3,080.65
  4. Step 4: Simplify right side
    8,345.60x = 38,569,918.00
  5. Step 5: Solve for x
    x = 38,569,918.00/8,345.60
  6. Step 6: Final answer
    x = 4,621.59

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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.