Home / 2,586.90-3,878.04-943.11

Finding the Fourth Proportional to 2,586.90, 3,878.04 and 943.11

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Solution

The fourth proportional to 2,586.90, 3,878.04 and 943.11 is: 1,413.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,586.90 : 3,878.04 = 943.11 : x
  2. Step 2: Convert to fraction form
    2,586.90/3,878.04 = 943.11/x
  3. Step 3: Cross multiply
    2,586.90x = 3,878.04 × 943.11
  4. Step 4: Simplify right side
    2,586.90x = 3,657,418.30
  5. Step 5: Solve for x
    x = 3,657,418.30/2,586.90
  6. Step 6: Final answer
    x = 1,413.82

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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.