Home / 3,395.40-4,686.18-1,979.13

Finding the Fourth Proportional to 3,395.40, 4,686.18 and 1,979.13

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Solution

The fourth proportional to 3,395.40, 4,686.18 and 1,979.13 is: 2,731.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,395.40 : 4,686.18 = 1,979.13 : x
  2. Step 2: Convert to fraction form
    3,395.40/4,686.18 = 1,979.13/x
  3. Step 3: Cross multiply
    3,395.40x = 4,686.18 × 1,979.13
  4. Step 4: Simplify right side
    3,395.40x = 9,274,559.42
  5. Step 5: Solve for x
    x = 9,274,559.42/3,395.40
  6. Step 6: Final answer
    x = 2,731.51

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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.