Home / 7,107.22-9,808.68-4,123.72

Finding the Fourth Proportional to 7,107.22, 9,808.68 and 4,123.72

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Solution

The fourth proportional to 7,107.22, 9,808.68 and 4,123.72 is: 5,691.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.22 : 9,808.68 = 4,123.72 : x
  2. Step 2: Convert to fraction form
    7,107.22/9,808.68 = 4,123.72/x
  3. Step 3: Cross multiply
    7,107.22x = 9,808.68 × 4,123.72
  4. Step 4: Simplify right side
    7,107.22x = 40,448,249.89
  5. Step 5: Solve for x
    x = 40,448,249.89/7,107.22
  6. Step 6: Final answer
    x = 5,691.15

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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.