Home / 7,107.39-9,809.13-4,122.60

Finding the Fourth Proportional to 7,107.39, 9,809.13 and 4,122.60

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Solution

The fourth proportional to 7,107.39, 9,809.13 and 4,122.60 is: 5,689.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.39 : 9,809.13 = 4,122.60 : x
  2. Step 2: Convert to fraction form
    7,107.39/9,809.13 = 4,122.60/x
  3. Step 3: Cross multiply
    7,107.39x = 9,809.13 × 4,122.60
  4. Step 4: Simplify right side
    7,107.39x = 40,439,119.34
  5. Step 5: Solve for x
    x = 40,439,119.34/7,107.39
  6. Step 6: Final answer
    x = 5,689.73

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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.