Home / 6,981.85-9,633.88-4,148.18

Finding the Fourth Proportional to 6,981.85, 9,633.88 and 4,148.18

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Solution

The fourth proportional to 6,981.85, 9,633.88 and 4,148.18 is: 5,723.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,981.85 : 9,633.88 = 4,148.18 : x
  2. Step 2: Convert to fraction form
    6,981.85/9,633.88 = 4,148.18/x
  3. Step 3: Cross multiply
    6,981.85x = 9,633.88 × 4,148.18
  4. Step 4: Simplify right side
    6,981.85x = 39,963,067.31
  5. Step 5: Solve for x
    x = 39,963,067.31/6,981.85
  6. Step 6: Final answer
    x = 5,723.85

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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.