Home / 1,549.12-2,318.64-1,138.16

Finding the Fourth Proportional to 1,549.12, 2,318.64 and 1,138.16

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Solution

The fourth proportional to 1,549.12, 2,318.64 and 1,138.16 is: 1,703.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,549.12 : 2,318.64 = 1,138.16 : x
  2. Step 2: Convert to fraction form
    1,549.12/2,318.64 = 1,138.16/x
  3. Step 3: Cross multiply
    1,549.12x = 2,318.64 × 1,138.16
  4. Step 4: Simplify right side
    1,549.12x = 2,638,983.30
  5. Step 5: Solve for x
    x = 2,638,983.30/1,549.12
  6. Step 6: Final answer
    x = 1,703.54

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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.