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Finding the Fourth Proportional to 6,342.34, 8,751.84 and 3,689.71

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Solution

The fourth proportional to 6,342.34, 8,751.84 and 3,689.71 is: 5,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,342.34 : 8,751.84 = 3,689.71 : x
  2. Step 2: Convert to fraction form
    6,342.34/8,751.84 = 3,689.71/x
  3. Step 3: Cross multiply
    6,342.34x = 8,751.84 × 3,689.71
  4. Step 4: Simplify right side
    6,342.34x = 32,291,751.57
  5. Step 5: Solve for x
    x = 32,291,751.57/6,342.34
  6. Step 6: Final answer
    x = 5,091.46

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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.