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Finding the Fourth Proportional to 4,764.88, 7,147.32 and 1,686.88

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Solution

The fourth proportional to 4,764.88, 7,147.32 and 1,686.88 is: 2,530.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,764.88 : 7,147.32 = 1,686.88 : x
  2. Step 2: Convert to fraction form
    4,764.88/7,147.32 = 1,686.88/x
  3. Step 3: Cross multiply
    4,764.88x = 7,147.32 × 1,686.88
  4. Step 4: Simplify right side
    4,764.88x = 12,056,671.16
  5. Step 5: Solve for x
    x = 12,056,671.16/4,764.88
  6. Step 6: Final answer
    x = 2,530.32

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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.