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Finding the Fourth Proportional to 6,612.65, 9,125.18 and 3,958.51

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Solution

The fourth proportional to 6,612.65, 9,125.18 and 3,958.51 is: 5,462.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.65 : 9,125.18 = 3,958.51 : x
  2. Step 2: Convert to fraction form
    6,612.65/9,125.18 = 3,958.51/x
  3. Step 3: Cross multiply
    6,612.65x = 9,125.18 × 3,958.51
  4. Step 4: Simplify right side
    6,612.65x = 36,122,070.66
  5. Step 5: Solve for x
    x = 36,122,070.66/6,612.65
  6. Step 6: Final answer
    x = 5,462.57

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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.