Home / 2,658.15-3,987.23-1,271.16

Finding the Fourth Proportional to 2,658.15, 3,987.23 and 1,271.16

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Solution

The fourth proportional to 2,658.15, 3,987.23 and 1,271.16 is: 1,906.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,658.15 : 3,987.23 = 1,271.16 : x
  2. Step 2: Convert to fraction form
    2,658.15/3,987.23 = 1,271.16/x
  3. Step 3: Cross multiply
    2,658.15x = 3,987.23 × 1,271.16
  4. Step 4: Simplify right side
    2,658.15x = 5,068,400.93
  5. Step 5: Solve for x
    x = 5,068,400.93/2,658.15
  6. Step 6: Final answer
    x = 1,906.74

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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.