Home / 2,725.60-4,086.37-875.66

Finding the Fourth Proportional to 2,725.60, 4,086.37 and 875.66

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Solution

The fourth proportional to 2,725.60, 4,086.37 and 875.66 is: 1,312.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,725.60 : 4,086.37 = 875.66 : x
  2. Step 2: Convert to fraction form
    2,725.60/4,086.37 = 875.66/x
  3. Step 3: Cross multiply
    2,725.60x = 4,086.37 × 875.66
  4. Step 4: Simplify right side
    2,725.60x = 3,578,269.48
  5. Step 5: Solve for x
    x = 3,578,269.48/2,725.60
  6. Step 6: Final answer
    x = 1,312.84

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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.