Home / 8,774.28-12,107.34-5,634.72

Finding the Fourth Proportional to 8,774.28, 12,107.34 and 5,634.72

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Solution

The fourth proportional to 8,774.28, 12,107.34 and 5,634.72 is: 7,775.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,774.28 : 12,107.34 = 5,634.72 : x
  2. Step 2: Convert to fraction form
    8,774.28/12,107.34 = 5,634.72/x
  3. Step 3: Cross multiply
    8,774.28x = 12,107.34 × 5,634.72
  4. Step 4: Simplify right side
    8,774.28x = 68,221,470.84
  5. Step 5: Solve for x
    x = 68,221,470.84/8,774.28
  6. Step 6: Final answer
    x = 7,775.16

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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.