Home / 5,426.78-8,140.07-1,728.95

Finding the Fourth Proportional to 5,426.78, 8,140.07 and 1,728.95

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Solution

The fourth proportional to 5,426.78, 8,140.07 and 1,728.95 is: 2,593.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,426.78 : 8,140.07 = 1,728.95 : x
  2. Step 2: Convert to fraction form
    5,426.78/8,140.07 = 1,728.95/x
  3. Step 3: Cross multiply
    5,426.78x = 8,140.07 × 1,728.95
  4. Step 4: Simplify right side
    5,426.78x = 14,073,737.65
  5. Step 5: Solve for x
    x = 14,073,737.65/5,426.78
  6. Step 6: Final answer
    x = 2,593.39

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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.