Home / 8,829.12-12,177.09-7,764.60

Finding the Fourth Proportional to 8,829.12, 12,177.09 and 7,764.60

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Solution

The fourth proportional to 8,829.12, 12,177.09 and 7,764.60 is: 10,708.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,829.12 : 12,177.09 = 7,764.60 : x
  2. Step 2: Convert to fraction form
    8,829.12/12,177.09 = 7,764.60/x
  3. Step 3: Cross multiply
    8,829.12x = 12,177.09 × 7,764.60
  4. Step 4: Simplify right side
    8,829.12x = 94,550,233.01
  5. Step 5: Solve for x
    x = 94,550,233.01/8,829.12
  6. Step 6: Final answer
    x = 10,708.91

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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.