Home / 5,178.82-7,142.91-3,290.95

Finding the Fourth Proportional to 5,178.82, 7,142.91 and 3,290.95

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Solution

The fourth proportional to 5,178.82, 7,142.91 and 3,290.95 is: 4,539.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.82 : 7,142.91 = 3,290.95 : x
  2. Step 2: Convert to fraction form
    5,178.82/7,142.91 = 3,290.95/x
  3. Step 3: Cross multiply
    5,178.82x = 7,142.91 × 3,290.95
  4. Step 4: Simplify right side
    5,178.82x = 23,506,959.66
  5. Step 5: Solve for x
    x = 23,506,959.66/5,178.82
  6. Step 6: Final answer
    x = 4,539.06

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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.