Home / 2,920.85-4,376-1,603.18

Finding the Fourth Proportional to 2,920.85, 4,376 and 1,603.18

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Solution

The fourth proportional to 2,920.85, 4,376 and 1,603.18 is: 2,401.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.85 : 4,376 = 1,603.18 : x
  2. Step 2: Convert to fraction form
    2,920.85/4,376 = 1,603.18/x
  3. Step 3: Cross multiply
    2,920.85x = 4,376 × 1,603.18
  4. Step 4: Simplify right side
    2,920.85x = 7,015,515.68
  5. Step 5: Solve for x
    x = 7,015,515.68/2,920.85
  6. Step 6: Final answer
    x = 2,401.87

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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.