Home / 12,743.17-19,114.75-3,978.83

Finding the Fourth Proportional to 12,743.17, 19,114.75 and 3,978.83

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Solution

The fourth proportional to 12,743.17, 19,114.75 and 3,978.83 is: 5,968.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,743.17 : 19,114.75 = 3,978.83 : x
  2. Step 2: Convert to fraction form
    12,743.17/19,114.75 = 3,978.83/x
  3. Step 3: Cross multiply
    12,743.17x = 19,114.75 × 3,978.83
  4. Step 4: Simplify right side
    12,743.17x = 76,054,398.48
  5. Step 5: Solve for x
    x = 76,054,398.48/12,743.17
  6. Step 6: Final answer
    x = 5,968.25

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Similar ratio
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1.5x scale

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.