Home / 2,420.95-3,340.81-1,373.21

Finding the Fourth Proportional to 2,420.95, 3,340.81 and 1,373.21

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Solution

The fourth proportional to 2,420.95, 3,340.81 and 1,373.21 is: 1,894.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.95 : 3,340.81 = 1,373.21 : x
  2. Step 2: Convert to fraction form
    2,420.95/3,340.81 = 1,373.21/x
  3. Step 3: Cross multiply
    2,420.95x = 3,340.81 × 1,373.21
  4. Step 4: Simplify right side
    2,420.95x = 4,587,633.70
  5. Step 5: Solve for x
    x = 4,587,633.70/2,420.95
  6. Step 6: Final answer
    x = 1,894.97

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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.