Home / 2,587.70-3,875.37-1,415.95

Finding the Fourth Proportional to 2,587.70, 3,875.37 and 1,415.95

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Solution

The fourth proportional to 2,587.70, 3,875.37 and 1,415.95 is: 2,120.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,587.70 : 3,875.37 = 1,415.95 : x
  2. Step 2: Convert to fraction form
    2,587.70/3,875.37 = 1,415.95/x
  3. Step 3: Cross multiply
    2,587.70x = 3,875.37 × 1,415.95
  4. Step 4: Simplify right side
    2,587.70x = 5,487,330.15
  5. Step 5: Solve for x
    x = 5,487,330.15/2,587.70
  6. Step 6: Final answer
    x = 2,120.54

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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.