Home / 2,225.13-3,338.23-686.13

Finding the Fourth Proportional to 2,225.13, 3,338.23 and 686.13

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Solution

The fourth proportional to 2,225.13, 3,338.23 and 686.13 is: 1,029.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,225.13 : 3,338.23 = 686.13 : x
  2. Step 2: Convert to fraction form
    2,225.13/3,338.23 = 686.13/x
  3. Step 3: Cross multiply
    2,225.13x = 3,338.23 × 686.13
  4. Step 4: Simplify right side
    2,225.13x = 2,290,459.75
  5. Step 5: Solve for x
    x = 2,290,459.75/2,225.13
  6. Step 6: Final answer
    x = 1,029.36

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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.