Home / 2,420.28-3,338.99-1,580.69

Finding the Fourth Proportional to 2,420.28, 3,338.99 and 1,580.69

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Solution

The fourth proportional to 2,420.28, 3,338.99 and 1,580.69 is: 2,180.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,420.28 : 3,338.99 = 1,580.69 : x
  2. Step 2: Convert to fraction form
    2,420.28/3,338.99 = 1,580.69/x
  3. Step 3: Cross multiply
    2,420.28x = 3,338.99 × 1,580.69
  4. Step 4: Simplify right side
    2,420.28x = 5,277,891.85
  5. Step 5: Solve for x
    x = 5,277,891.85/2,420.28
  6. Step 6: Final answer
    x = 2,180.70

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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.