Home / 2,420.38-3,340.19-1,372.51

Finding the Fourth Proportional to 2,420.38, 3,340.19 and 1,372.51

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Solution

The fourth proportional to 2,420.38, 3,340.19 and 1,372.51 is: 1,894.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.38 : 3,340.19 = 1,372.51 : x
  2. Step 2: Convert to fraction form
    2,420.38/3,340.19 = 1,372.51/x
  3. Step 3: Cross multiply
    2,420.38x = 3,340.19 × 1,372.51
  4. Step 4: Simplify right side
    2,420.38x = 4,584,444.18
  5. Step 5: Solve for x
    x = 4,584,444.18/2,420.38
  6. Step 6: Final answer
    x = 1,894.10

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1.5x scale

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.