Home / 9,090.28-12,602.47-8,769.88

Finding the Fourth Proportional to 9,090.28, 12,602.47 and 8,769.88

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Solution

The fourth proportional to 9,090.28, 12,602.47 and 8,769.88 is: 12,158.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,090.28 : 12,602.47 = 8,769.88 : x
  2. Step 2: Convert to fraction form
    9,090.28/12,602.47 = 8,769.88/x
  3. Step 3: Cross multiply
    9,090.28x = 12,602.47 × 8,769.88
  4. Step 4: Simplify right side
    9,090.28x = 110,522,149.60
  5. Step 5: Solve for x
    x = 110,522,149.60/9,090.28
  6. Step 6: Final answer
    x = 12,158.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.