Home / 5,240.26-7,860.21-2,278.70

Finding the Fourth Proportional to 5,240.26, 7,860.21 and 2,278.70

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Solution

The fourth proportional to 5,240.26, 7,860.21 and 2,278.70 is: 3,417.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,240.26 : 7,860.21 = 2,278.70 : x
  2. Step 2: Convert to fraction form
    5,240.26/7,860.21 = 2,278.70/x
  3. Step 3: Cross multiply
    5,240.26x = 7,860.21 × 2,278.70
  4. Step 4: Simplify right side
    5,240.26x = 17,911,042.16
  5. Step 5: Solve for x
    x = 17,911,042.16/5,240.26
  6. Step 6: Final answer
    x = 3,417.97

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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.