Home / 3,478.06-4,799.88-1,986.10

Finding the Fourth Proportional to 3,478.06, 4,799.88 and 1,986.10

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Solution

The fourth proportional to 3,478.06, 4,799.88 and 1,986.10 is: 2,740.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.06 : 4,799.88 = 1,986.10 : x
  2. Step 2: Convert to fraction form
    3,478.06/4,799.88 = 1,986.10/x
  3. Step 3: Cross multiply
    3,478.06x = 4,799.88 × 1,986.10
  4. Step 4: Simplify right side
    3,478.06x = 9,533,029.67
  5. Step 5: Solve for x
    x = 9,533,029.67/3,478.06
  6. Step 6: Final answer
    x = 2,740.90

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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.