Home / 3,478.71-4,799.19-1,986.30

Finding the Fourth Proportional to 3,478.71, 4,799.19 and 1,986.30

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Solution

The fourth proportional to 3,478.71, 4,799.19 and 1,986.30 is: 2,740.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.71 : 4,799.19 = 1,986.30 : x
  2. Step 2: Convert to fraction form
    3,478.71/4,799.19 = 1,986.30/x
  3. Step 3: Cross multiply
    3,478.71x = 4,799.19 × 1,986.30
  4. Step 4: Simplify right side
    3,478.71x = 9,532,631.10
  5. Step 5: Solve for x
    x = 9,532,631.10/3,478.71
  6. Step 6: Final answer
    x = 2,740.28

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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.