Home / 5,378.79-8,065.27-2,602.78

Finding the Fourth Proportional to 5,378.79, 8,065.27 and 2,602.78

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Solution

The fourth proportional to 5,378.79, 8,065.27 and 2,602.78 is: 3,902.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.79 : 8,065.27 = 2,602.78 : x
  2. Step 2: Convert to fraction form
    5,378.79/8,065.27 = 2,602.78/x
  3. Step 3: Cross multiply
    5,378.79x = 8,065.27 × 2,602.78
  4. Step 4: Simplify right side
    5,378.79x = 20,992,151.91
  5. Step 5: Solve for x
    x = 20,992,151.91/5,378.79
  6. Step 6: Final answer
    x = 3,902.77

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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.