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Finding the Fourth Proportional to 7,885.59, 10,887.18 and 4,905.48

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Solution

The fourth proportional to 7,885.59, 10,887.18 and 4,905.48 is: 6,772.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,885.59 : 10,887.18 = 4,905.48 : x
  2. Step 2: Convert to fraction form
    7,885.59/10,887.18 = 4,905.48/x
  3. Step 3: Cross multiply
    7,885.59x = 10,887.18 × 4,905.48
  4. Step 4: Simplify right side
    7,885.59x = 53,406,843.75
  5. Step 5: Solve for x
    x = 53,406,843.75/7,885.59
  6. Step 6: Final answer
    x = 6,772.71

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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.