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Finding the Fourth Proportional to 7,882.90, 10,878.42 and 4,346.08

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Solution

The fourth proportional to 7,882.90, 10,878.42 and 4,346.08 is: 5,997.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,882.90 : 10,878.42 = 4,346.08 : x
  2. Step 2: Convert to fraction form
    7,882.90/10,878.42 = 4,346.08/x
  3. Step 3: Cross multiply
    7,882.90x = 10,878.42 × 4,346.08
  4. Step 4: Simplify right side
    7,882.90x = 47,278,483.59
  5. Step 5: Solve for x
    x = 47,278,483.59/7,882.90
  6. Step 6: Final answer
    x = 5,997.60

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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.