Home / 3,675.85-5,079.36-2,679.40

Finding the Fourth Proportional to 3,675.85, 5,079.36 and 2,679.40

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Solution

The fourth proportional to 3,675.85, 5,079.36 and 2,679.40 is: 3,702.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,675.85 : 5,079.36 = 2,679.40 : x
  2. Step 2: Convert to fraction form
    3,675.85/5,079.36 = 2,679.40/x
  3. Step 3: Cross multiply
    3,675.85x = 5,079.36 × 2,679.40
  4. Step 4: Simplify right side
    3,675.85x = 13,609,637.18
  5. Step 5: Solve for x
    x = 13,609,637.18/3,675.85
  6. Step 6: Final answer
    x = 3,702.45

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1.5x scale

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.