Home / 2,158.77-3,229.95-1,335

Finding the Fourth Proportional to 2,158.77, 3,229.95 and 1,335

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Solution

The fourth proportional to 2,158.77, 3,229.95 and 1,335 is: 1,997.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.77 : 3,229.95 = 1,335 : x
  2. Step 2: Convert to fraction form
    2,158.77/3,229.95 = 1,335/x
  3. Step 3: Cross multiply
    2,158.77x = 3,229.95 × 1,335
  4. Step 4: Simplify right side
    2,158.77x = 4,311,983.25
  5. Step 5: Solve for x
    x = 4,311,983.25/2,158.77
  6. Step 6: Final answer
    x = 1,997.43

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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.