Home / 7,209-9,948.42-4,065.12

Finding the Fourth Proportional to 7,209, 9,948.42 and 4,065.12

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Solution

The fourth proportional to 7,209, 9,948.42 and 4,065.12 is: 5,609.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,209 : 9,948.42 = 4,065.12 : x
  2. Step 2: Convert to fraction form
    7,209/9,948.42 = 4,065.12/x
  3. Step 3: Cross multiply
    7,209x = 9,948.42 × 4,065.12
  4. Step 4: Simplify right side
    7,209x = 40,441,521.11
  5. Step 5: Solve for x
    x = 40,441,521.11/7,209
  6. Step 6: Final answer
    x = 5,609.87

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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.