Home / 8,600.80-11,861.28-5,615.68

Finding the Fourth Proportional to 8,600.80, 11,861.28 and 5,615.68

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Solution

The fourth proportional to 8,600.80, 11,861.28 and 5,615.68 is: 7,744.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,600.80 : 11,861.28 = 5,615.68 : x
  2. Step 2: Convert to fraction form
    8,600.80/11,861.28 = 5,615.68/x
  3. Step 3: Cross multiply
    8,600.80x = 11,861.28 × 5,615.68
  4. Step 4: Simplify right side
    8,600.80x = 66,609,152.87
  5. Step 5: Solve for x
    x = 66,609,152.87/8,600.80
  6. Step 6: Final answer
    x = 7,744.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.