Home / 1,749.28-2,624.64-979.76

Finding the Fourth Proportional to 1,749.28, 2,624.64 and 979.76

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Solution

The fourth proportional to 1,749.28, 2,624.64 and 979.76 is: 1,470.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,749.28 : 2,624.64 = 979.76 : x
  2. Step 2: Convert to fraction form
    1,749.28/2,624.64 = 979.76/x
  3. Step 3: Cross multiply
    1,749.28x = 2,624.64 × 979.76
  4. Step 4: Simplify right side
    1,749.28x = 2,571,517.29
  5. Step 5: Solve for x
    x = 2,571,517.29/1,749.28
  6. Step 6: Final answer
    x = 1,470.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.