Home / 3,326.49-4,989.75-1,680.78

Finding the Fourth Proportional to 3,326.49, 4,989.75 and 1,680.78

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Solution

The fourth proportional to 3,326.49, 4,989.75 and 1,680.78 is: 2,521.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,326.49 : 4,989.75 = 1,680.78 : x
  2. Step 2: Convert to fraction form
    3,326.49/4,989.75 = 1,680.78/x
  3. Step 3: Cross multiply
    3,326.49x = 4,989.75 × 1,680.78
  4. Step 4: Simplify right side
    3,326.49x = 8,386,672.01
  5. Step 5: Solve for x
    x = 8,386,672.01/3,326.49
  6. Step 6: Final answer
    x = 2,521.18

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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.