Home / 7,107.64-9,805.79-4,122.92

Finding the Fourth Proportional to 7,107.64, 9,805.79 and 4,122.92

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Solution

The fourth proportional to 7,107.64, 9,805.79 and 4,122.92 is: 5,688.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.64 : 9,805.79 = 4,122.92 : x
  2. Step 2: Convert to fraction form
    7,107.64/9,805.79 = 4,122.92/x
  3. Step 3: Cross multiply
    7,107.64x = 9,805.79 × 4,122.92
  4. Step 4: Simplify right side
    7,107.64x = 40,428,522.53
  5. Step 5: Solve for x
    x = 40,428,522.53/7,107.64
  6. Step 6: Final answer
    x = 5,688.04

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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.