Home / 3,309.28-4,963.89-1,000.78

Finding the Fourth Proportional to 3,309.28, 4,963.89 and 1,000.78

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Solution

The fourth proportional to 3,309.28, 4,963.89 and 1,000.78 is: 1,501.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,309.28 : 4,963.89 = 1,000.78 : x
  2. Step 2: Convert to fraction form
    3,309.28/4,963.89 = 1,000.78/x
  3. Step 3: Cross multiply
    3,309.28x = 4,963.89 × 1,000.78
  4. Step 4: Simplify right side
    3,309.28x = 4,967,761.83
  5. Step 5: Solve for x
    x = 4,967,761.83/3,309.28
  6. Step 6: Final answer
    x = 1,501.16

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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.