Home / 2,656.98-3,988.26-1,271.48

Finding the Fourth Proportional to 2,656.98, 3,988.26 and 1,271.48

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Solution

The fourth proportional to 2,656.98, 3,988.26 and 1,271.48 is: 1,908.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,656.98 : 3,988.26 = 1,271.48 : x
  2. Step 2: Convert to fraction form
    2,656.98/3,988.26 = 1,271.48/x
  3. Step 3: Cross multiply
    2,656.98x = 3,988.26 × 1,271.48
  4. Step 4: Simplify right side
    2,656.98x = 5,070,972.88
  5. Step 5: Solve for x
    x = 5,070,972.88/2,656.98
  6. Step 6: Final answer
    x = 1,908.55

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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.