Home / 2,926.64-4,040.35-1,987.45

Finding the Fourth Proportional to 2,926.64, 4,040.35 and 1,987.45

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Solution

The fourth proportional to 2,926.64, 4,040.35 and 1,987.45 is: 2,743.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,926.64 : 4,040.35 = 1,987.45 : x
  2. Step 2: Convert to fraction form
    2,926.64/4,040.35 = 1,987.45/x
  3. Step 3: Cross multiply
    2,926.64x = 4,040.35 × 1,987.45
  4. Step 4: Simplify right side
    2,926.64x = 8,029,978.54
  5. Step 5: Solve for x
    x = 8,029,978.54/2,926.64
  6. Step 6: Final answer
    x = 2,743.75

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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.