Home / 6,987.60-10,472.40-3,088.80

Finding the Fourth Proportional to 6,987.60, 10,472.40 and 3,088.80

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Solution

The fourth proportional to 6,987.60, 10,472.40 and 3,088.80 is: 4,629.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,987.60 : 10,472.40 = 3,088.80 : x
  2. Step 2: Convert to fraction form
    6,987.60/10,472.40 = 3,088.80/x
  3. Step 3: Cross multiply
    6,987.60x = 10,472.40 × 3,088.80
  4. Step 4: Simplify right side
    6,987.60x = 32,347,149.12
  5. Step 5: Solve for x
    x = 32,347,149.12/6,987.60
  6. Step 6: Final answer
    x = 4,629.22

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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.