Home / 3,478.93-5,218.35-1,139.02

Finding the Fourth Proportional to 3,478.93, 5,218.35 and 1,139.02

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Solution

The fourth proportional to 3,478.93, 5,218.35 and 1,139.02 is: 1,708.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.93 : 5,218.35 = 1,139.02 : x
  2. Step 2: Convert to fraction form
    3,478.93/5,218.35 = 1,139.02/x
  3. Step 3: Cross multiply
    3,478.93x = 5,218.35 × 1,139.02
  4. Step 4: Simplify right side
    3,478.93x = 5,943,805.02
  5. Step 5: Solve for x
    x = 5,943,805.02/3,478.93
  6. Step 6: Final answer
    x = 1,708.52

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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.