Home / 6,479.16-9,720.08-2,781.60

Finding the Fourth Proportional to 6,479.16, 9,720.08 and 2,781.60

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Solution

The fourth proportional to 6,479.16, 9,720.08 and 2,781.60 is: 4,172.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,479.16 : 9,720.08 = 2,781.60 : x
  2. Step 2: Convert to fraction form
    6,479.16/9,720.08 = 2,781.60/x
  3. Step 3: Cross multiply
    6,479.16x = 9,720.08 × 2,781.60
  4. Step 4: Simplify right side
    6,479.16x = 27,037,374.53
  5. Step 5: Solve for x
    x = 27,037,374.53/6,479.16
  6. Step 6: Final answer
    x = 4,172.98

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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.