Home / 5,382.76-8,070.81-1,871.25

Finding the Fourth Proportional to 5,382.76, 8,070.81 and 1,871.25

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Solution

The fourth proportional to 5,382.76, 8,070.81 and 1,871.25 is: 2,805.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,382.76 : 8,070.81 = 1,871.25 : x
  2. Step 2: Convert to fraction form
    5,382.76/8,070.81 = 1,871.25/x
  3. Step 3: Cross multiply
    5,382.76x = 8,070.81 × 1,871.25
  4. Step 4: Simplify right side
    5,382.76x = 15,102,462.86
  5. Step 5: Solve for x
    x = 15,102,462.86/5,382.76
  6. Step 6: Final answer
    x = 2,805.71

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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.