Home / 2,587.20-3,876.48-1,816.32

Finding the Fourth Proportional to 2,587.20, 3,876.48 and 1,816.32

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Solution

The fourth proportional to 2,587.20, 3,876.48 and 1,816.32 is: 2,721.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.20 : 3,876.48 = 1,816.32 : x
  2. Step 2: Convert to fraction form
    2,587.20/3,876.48 = 1,816.32/x
  3. Step 3: Cross multiply
    2,587.20x = 3,876.48 × 1,816.32
  4. Step 4: Simplify right side
    2,587.20x = 7,040,928.15
  5. Step 5: Solve for x
    x = 7,040,928.15/2,587.20
  6. Step 6: Final answer
    x = 2,721.45

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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.