Home / 2,165.89-3,254.20-1,386.24

Finding the Fourth Proportional to 2,165.89, 3,254.20 and 1,386.24

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Solution

The fourth proportional to 2,165.89, 3,254.20 and 1,386.24 is: 2,082.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.89 : 3,254.20 = 1,386.24 : x
  2. Step 2: Convert to fraction form
    2,165.89/3,254.20 = 1,386.24/x
  3. Step 3: Cross multiply
    2,165.89x = 3,254.20 × 1,386.24
  4. Step 4: Simplify right side
    2,165.89x = 4,511,102.21
  5. Step 5: Solve for x
    x = 4,511,102.21/2,165.89
  6. Step 6: Final answer
    x = 2,082.79

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1.5x scale

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.