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Finding the Fourth Proportional to 6,671.80, 9,207.55 and 3,687.57

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Solution

The fourth proportional to 6,671.80, 9,207.55 and 3,687.57 is: 5,089.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,671.80 : 9,207.55 = 3,687.57 : x
  2. Step 2: Convert to fraction form
    6,671.80/9,207.55 = 3,687.57/x
  3. Step 3: Cross multiply
    6,671.80x = 9,207.55 × 3,687.57
  4. Step 4: Simplify right side
    6,671.80x = 33,953,448.33
  5. Step 5: Solve for x
    x = 33,953,448.33/6,671.80
  6. Step 6: Final answer
    x = 5,089.10

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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.