Home / 2,470.72-3,407.52-1,917.76

Finding the Fourth Proportional to 2,470.72, 3,407.52 and 1,917.76

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Solution

The fourth proportional to 2,470.72, 3,407.52 and 1,917.76 is: 2,644.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,470.72 : 3,407.52 = 1,917.76 : x
  2. Step 2: Convert to fraction form
    2,470.72/3,407.52 = 1,917.76/x
  3. Step 3: Cross multiply
    2,470.72x = 3,407.52 × 1,917.76
  4. Step 4: Simplify right side
    2,470.72x = 6,534,805.56
  5. Step 5: Solve for x
    x = 6,534,805.56/2,470.72
  6. Step 6: Final answer
    x = 2,644.90

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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.