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Finding the Fourth Proportional to 8,888.47, 13,329.63 and 4,945.72

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Solution

The fourth proportional to 8,888.47, 13,329.63 and 4,945.72 is: 7,416.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,888.47 : 13,329.63 = 4,945.72 : x
  2. Step 2: Convert to fraction form
    8,888.47/13,329.63 = 4,945.72/x
  3. Step 3: Cross multiply
    8,888.47x = 13,329.63 × 4,945.72
  4. Step 4: Simplify right side
    8,888.47x = 65,924,617.68
  5. Step 5: Solve for x
    x = 65,924,617.68/8,888.47
  6. Step 6: Final answer
    x = 7,416.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.