Home / 2,987.96-4,125.26-2,045.32

Finding the Fourth Proportional to 2,987.96, 4,125.26 and 2,045.32

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Solution

The fourth proportional to 2,987.96, 4,125.26 and 2,045.32 is: 2,823.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.96 : 4,125.26 = 2,045.32 : x
  2. Step 2: Convert to fraction form
    2,987.96/4,125.26 = 2,045.32/x
  3. Step 3: Cross multiply
    2,987.96x = 4,125.26 × 2,045.32
  4. Step 4: Simplify right side
    2,987.96x = 8,437,471.58
  5. Step 5: Solve for x
    x = 8,437,471.58/2,987.96
  6. Step 6: Final answer
    x = 2,823.83

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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.