Home / 2,156.45-3,229.85-1,875.20

Finding the Fourth Proportional to 2,156.45, 3,229.85 and 1,875.20

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Solution

The fourth proportional to 2,156.45, 3,229.85 and 1,875.20 is: 2,808.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,156.45 : 3,229.85 = 1,875.20 : x
  2. Step 2: Convert to fraction form
    2,156.45/3,229.85 = 1,875.20/x
  3. Step 3: Cross multiply
    2,156.45x = 3,229.85 × 1,875.20
  4. Step 4: Simplify right side
    2,156.45x = 6,056,603.26
  5. Step 5: Solve for x
    x = 6,056,603.26/2,156.45
  6. Step 6: Final answer
    x = 2,808.61

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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.