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Finding the Fourth Proportional to 8,858.16, 12,225.12 and 5,082

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Solution

The fourth proportional to 8,858.16, 12,225.12 and 5,082 is: 7,013.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,858.16 : 12,225.12 = 5,082 : x
  2. Step 2: Convert to fraction form
    8,858.16/12,225.12 = 5,082/x
  3. Step 3: Cross multiply
    8,858.16x = 12,225.12 × 5,082
  4. Step 4: Simplify right side
    8,858.16x = 62,128,059.84
  5. Step 5: Solve for x
    x = 62,128,059.84/8,858.16
  6. Step 6: Final answer
    x = 7,013.65

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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.