Home / 2,587.45-3,881.18-1,355.22

Finding the Fourth Proportional to 2,587.45, 3,881.18 and 1,355.22

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Solution

The fourth proportional to 2,587.45, 3,881.18 and 1,355.22 is: 2,032.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.45 : 3,881.18 = 1,355.22 : x
  2. Step 2: Convert to fraction form
    2,587.45/3,881.18 = 1,355.22/x
  3. Step 3: Cross multiply
    2,587.45x = 3,881.18 × 1,355.22
  4. Step 4: Simplify right side
    2,587.45x = 5,259,852.76
  5. Step 5: Solve for x
    x = 5,259,852.76/2,587.45
  6. Step 6: Final answer
    x = 2,032.83

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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.