Home / 2,419.68-3,337.20-2,189.28

Finding the Fourth Proportional to 2,419.68, 3,337.20 and 2,189.28

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Solution

The fourth proportional to 2,419.68, 3,337.20 and 2,189.28 is: 3,019.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.68 : 3,337.20 = 2,189.28 : x
  2. Step 2: Convert to fraction form
    2,419.68/3,337.20 = 2,189.28/x
  3. Step 3: Cross multiply
    2,419.68x = 3,337.20 × 2,189.28
  4. Step 4: Simplify right side
    2,419.68x = 7,306,065.22
  5. Step 5: Solve for x
    x = 7,306,065.22/2,419.68
  6. Step 6: Final answer
    x = 3,019.43

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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.