Home / 3,934.71-5,897.79-1,987.05

Finding the Fourth Proportional to 3,934.71, 5,897.79 and 1,987.05

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Solution

The fourth proportional to 3,934.71, 5,897.79 and 1,987.05 is: 2,978.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,934.71 : 5,897.79 = 1,987.05 : x
  2. Step 2: Convert to fraction form
    3,934.71/5,897.79 = 1,987.05/x
  3. Step 3: Cross multiply
    3,934.71x = 5,897.79 × 1,987.05
  4. Step 4: Simplify right side
    3,934.71x = 11,719,203.62
  5. Step 5: Solve for x
    x = 11,719,203.62/3,934.71
  6. Step 6: Final answer
    x = 2,978.42

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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.