Home / 3,926.88-5,417.28-2,743.20

Finding the Fourth Proportional to 3,926.88, 5,417.28 and 2,743.20

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Solution

The fourth proportional to 3,926.88, 5,417.28 and 2,743.20 is: 3,784.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,926.88 : 5,417.28 = 2,743.20 : x
  2. Step 2: Convert to fraction form
    3,926.88/5,417.28 = 2,743.20/x
  3. Step 3: Cross multiply
    3,926.88x = 5,417.28 × 2,743.20
  4. Step 4: Simplify right side
    3,926.88x = 14,860,682.50
  5. Step 5: Solve for x
    x = 14,860,682.50/3,926.88
  6. Step 6: Final answer
    x = 3,784.35

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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.