Home / 2,420.55-3,340.62-1,372.50

Finding the Fourth Proportional to 2,420.55, 3,340.62 and 1,372.50

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Solution

The fourth proportional to 2,420.55, 3,340.62 and 1,372.50 is: 1,894.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.55 : 3,340.62 = 1,372.50 : x
  2. Step 2: Convert to fraction form
    2,420.55/3,340.62 = 1,372.50/x
  3. Step 3: Cross multiply
    2,420.55x = 3,340.62 × 1,372.50
  4. Step 4: Simplify right side
    2,420.55x = 4,585,000.95
  5. Step 5: Solve for x
    x = 4,585,000.95/2,420.55
  6. Step 6: Final answer
    x = 1,894.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.