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Finding the Fourth Proportional to 3,167.86, 4,751.87 and 976.76

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Solution

The fourth proportional to 3,167.86, 4,751.87 and 976.76 is: 1,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,167.86 : 4,751.87 = 976.76 : x
  2. Step 2: Convert to fraction form
    3,167.86/4,751.87 = 976.76/x
  3. Step 3: Cross multiply
    3,167.86x = 4,751.87 × 976.76
  4. Step 4: Simplify right side
    3,167.86x = 4,641,425.72
  5. Step 5: Solve for x
    x = 4,641,425.72/3,167.86
  6. Step 6: Final answer
    x = 1,465.16

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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.