Home / 4,139.47-5,708.55-2,647.86

Finding the Fourth Proportional to 4,139.47, 5,708.55 and 2,647.86

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Solution

The fourth proportional to 4,139.47, 5,708.55 and 2,647.86 is: 3,651.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,139.47 : 5,708.55 = 2,647.86 : x
  2. Step 2: Convert to fraction form
    4,139.47/5,708.55 = 2,647.86/x
  3. Step 3: Cross multiply
    4,139.47x = 5,708.55 × 2,647.86
  4. Step 4: Simplify right side
    4,139.47x = 15,115,441.20
  5. Step 5: Solve for x
    x = 15,115,441.20/4,139.47
  6. Step 6: Final answer
    x = 3,651.54

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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.