Home / 2,917.60-4,376.40-2,456.80

Finding the Fourth Proportional to 2,917.60, 4,376.40 and 2,456.80

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Solution

The fourth proportional to 2,917.60, 4,376.40 and 2,456.80 is: 3,685.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,917.60 : 4,376.40 = 2,456.80 : x
  2. Step 2: Convert to fraction form
    2,917.60/4,376.40 = 2,456.80/x
  3. Step 3: Cross multiply
    2,917.60x = 4,376.40 × 2,456.80
  4. Step 4: Simplify right side
    2,917.60x = 10,751,939.52
  5. Step 5: Solve for x
    x = 10,751,939.52/2,917.60
  6. Step 6: Final answer
    x = 3,685.20

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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.