Home / 5,358.28-7,394.45-3,121.69

Finding the Fourth Proportional to 5,358.28, 7,394.45 and 3,121.69

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Solution

The fourth proportional to 5,358.28, 7,394.45 and 3,121.69 is: 4,307.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,358.28 : 7,394.45 = 3,121.69 : x
  2. Step 2: Convert to fraction form
    5,358.28/7,394.45 = 3,121.69/x
  3. Step 3: Cross multiply
    5,358.28x = 7,394.45 × 3,121.69
  4. Step 4: Simplify right side
    5,358.28x = 23,083,165.01
  5. Step 5: Solve for x
    x = 23,083,165.01/5,358.28
  6. Step 6: Final answer
    x = 4,307.94

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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.