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Finding the Fourth Proportional to 9,077.65, 12,522.65 and 7,881.01

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Solution

The fourth proportional to 9,077.65, 12,522.65 and 7,881.01 is: 10,871.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,077.65 : 12,522.65 = 7,881.01 : x
  2. Step 2: Convert to fraction form
    9,077.65/12,522.65 = 7,881.01/x
  3. Step 3: Cross multiply
    9,077.65x = 12,522.65 × 7,881.01
  4. Step 4: Simplify right side
    9,077.65x = 98,691,090.47
  5. Step 5: Solve for x
    x = 98,691,090.47/9,077.65
  6. Step 6: Final answer
    x = 10,871.88

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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.