Home / 2,420.36-3,340.41-1,372.76

Finding the Fourth Proportional to 2,420.36, 3,340.41 and 1,372.76

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Solution

The fourth proportional to 2,420.36, 3,340.41 and 1,372.76 is: 1,894.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.36 : 3,340.41 = 1,372.76 : x
  2. Step 2: Convert to fraction form
    2,420.36/3,340.41 = 1,372.76/x
  3. Step 3: Cross multiply
    2,420.36x = 3,340.41 × 1,372.76
  4. Step 4: Simplify right side
    2,420.36x = 4,585,581.23
  5. Step 5: Solve for x
    x = 4,585,581.23/2,420.36
  6. Step 6: Final answer
    x = 1,894.59

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Half scale
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Double scale
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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.