Home / 7,856.89-10,839.78-5,025.92

Finding the Fourth Proportional to 7,856.89, 10,839.78 and 5,025.92

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Solution

The fourth proportional to 7,856.89, 10,839.78 and 5,025.92 is: 6,934.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,856.89 : 10,839.78 = 5,025.92 : x
  2. Step 2: Convert to fraction form
    7,856.89/10,839.78 = 5,025.92/x
  3. Step 3: Cross multiply
    7,856.89x = 10,839.78 × 5,025.92
  4. Step 4: Simplify right side
    7,856.89x = 54,479,812.90
  5. Step 5: Solve for x
    x = 54,479,812.90/7,856.89
  6. Step 6: Final answer
    x = 6,934.02

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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.