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Finding the Fourth Proportional to 8,835.78, 12,187.11 and 7,500.25

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Solution

The fourth proportional to 8,835.78, 12,187.11 and 7,500.25 is: 10,345.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,835.78 : 12,187.11 = 7,500.25 : x
  2. Step 2: Convert to fraction form
    8,835.78/12,187.11 = 7,500.25/x
  3. Step 3: Cross multiply
    8,835.78x = 12,187.11 × 7,500.25
  4. Step 4: Simplify right side
    8,835.78x = 91,406,304.40
  5. Step 5: Solve for x
    x = 91,406,304.40/8,835.78
  6. Step 6: Final answer
    x = 10,345.01

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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.