Home / 7,148.38-10,722.87-2,221.36

Finding the Fourth Proportional to 7,148.38, 10,722.87 and 2,221.36

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Solution

The fourth proportional to 7,148.38, 10,722.87 and 2,221.36 is: 3,332.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,148.38 : 10,722.87 = 2,221.36 : x
  2. Step 2: Convert to fraction form
    7,148.38/10,722.87 = 2,221.36/x
  3. Step 3: Cross multiply
    7,148.38x = 10,722.87 × 2,221.36
  4. Step 4: Simplify right side
    7,148.38x = 23,819,354.50
  5. Step 5: Solve for x
    x = 23,819,354.50/7,148.38
  6. Step 6: Final answer
    x = 3,332.13

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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.