Home / 1,135.88-1,568.66-1,013.72

Finding the Fourth Proportional to 1,135.88, 1,568.66 and 1,013.72

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Solution

The fourth proportional to 1,135.88, 1,568.66 and 1,013.72 is: 1,399.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,135.88 : 1,568.66 = 1,013.72 : x
  2. Step 2: Convert to fraction form
    1,135.88/1,568.66 = 1,013.72/x
  3. Step 3: Cross multiply
    1,135.88x = 1,568.66 × 1,013.72
  4. Step 4: Simplify right side
    1,135.88x = 1,590,182.02
  5. Step 5: Solve for x
    x = 1,590,182.02/1,135.88
  6. Step 6: Final answer
    x = 1,399.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.