Home / 3,587.18-5,381.49-1,278.62

Finding the Fourth Proportional to 3,587.18, 5,381.49 and 1,278.62

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Solution

The fourth proportional to 3,587.18, 5,381.49 and 1,278.62 is: 1,918.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,587.18 : 5,381.49 = 1,278.62 : x
  2. Step 2: Convert to fraction form
    3,587.18/5,381.49 = 1,278.62/x
  3. Step 3: Cross multiply
    3,587.18x = 5,381.49 × 1,278.62
  4. Step 4: Simplify right side
    3,587.18x = 6,880,880.74
  5. Step 5: Solve for x
    x = 6,880,880.74/3,587.18
  6. Step 6: Final answer
    x = 1,918.19

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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.