Home / 2,456.76-3,387.54-1,783.20

Finding the Fourth Proportional to 2,456.76, 3,387.54 and 1,783.20

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Solution

The fourth proportional to 2,456.76, 3,387.54 and 1,783.20 is: 2,458.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,456.76 : 3,387.54 = 1,783.20 : x
  2. Step 2: Convert to fraction form
    2,456.76/3,387.54 = 1,783.20/x
  3. Step 3: Cross multiply
    2,456.76x = 3,387.54 × 1,783.20
  4. Step 4: Simplify right side
    2,456.76x = 6,040,661.33
  5. Step 5: Solve for x
    x = 6,040,661.33/2,456.76
  6. Step 6: Final answer
    x = 2,458.79

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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.