Home / 2,578.84-3,868.44-1,118.08

Finding the Fourth Proportional to 2,578.84, 3,868.44 and 1,118.08

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Solution

The fourth proportional to 2,578.84, 3,868.44 and 1,118.08 is: 1,677.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,578.84 : 3,868.44 = 1,118.08 : x
  2. Step 2: Convert to fraction form
    2,578.84/3,868.44 = 1,118.08/x
  3. Step 3: Cross multiply
    2,578.84x = 3,868.44 × 1,118.08
  4. Step 4: Simplify right side
    2,578.84x = 4,325,225.40
  5. Step 5: Solve for x
    x = 4,325,225.40/2,578.84
  6. Step 6: Final answer
    x = 1,677.20

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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.