Home / 8,619.60-12,939.12-5,703.60

Finding the Fourth Proportional to 8,619.60, 12,939.12 and 5,703.60

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Solution

The fourth proportional to 8,619.60, 12,939.12 and 5,703.60 is: 8,561.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,619.60 : 12,939.12 = 5,703.60 : x
  2. Step 2: Convert to fraction form
    8,619.60/12,939.12 = 5,703.60/x
  3. Step 3: Cross multiply
    8,619.60x = 12,939.12 × 5,703.60
  4. Step 4: Simplify right side
    8,619.60x = 73,799,564.83
  5. Step 5: Solve for x
    x = 73,799,564.83/8,619.60
  6. Step 6: Final answer
    x = 8,561.83

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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.