Home / 4,084.90-6,123.44-1,309.78

Finding the Fourth Proportional to 4,084.90, 6,123.44 and 1,309.78

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Solution

The fourth proportional to 4,084.90, 6,123.44 and 1,309.78 is: 1,963.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,084.90 : 6,123.44 = 1,309.78 : x
  2. Step 2: Convert to fraction form
    4,084.90/6,123.44 = 1,309.78/x
  3. Step 3: Cross multiply
    4,084.90x = 6,123.44 × 1,309.78
  4. Step 4: Simplify right side
    4,084.90x = 8,020,359.24
  5. Step 5: Solve for x
    x = 8,020,359.24/4,084.90
  6. Step 6: Final answer
    x = 1,963.42

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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.