Home / 7,107.20-9,809.28-4,276.88

Finding the Fourth Proportional to 7,107.20, 9,809.28 and 4,276.88

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Solution

The fourth proportional to 7,107.20, 9,809.28 and 4,276.88 is: 5,902.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,107.20 : 9,809.28 = 4,276.88 : x
  2. Step 2: Convert to fraction form
    7,107.20/9,809.28 = 4,276.88/x
  3. Step 3: Cross multiply
    7,107.20x = 9,809.28 × 4,276.88
  4. Step 4: Simplify right side
    7,107.20x = 41,953,113.45
  5. Step 5: Solve for x
    x = 41,953,113.45/7,107.20
  6. Step 6: Final answer
    x = 5,902.90

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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.