Home / 1,454.59-2,181.38-480.45

Finding the Fourth Proportional to 1,454.59, 2,181.38 and 480.45

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Solution

The fourth proportional to 1,454.59, 2,181.38 and 480.45 is: 720.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,454.59 : 2,181.38 = 480.45 : x
  2. Step 2: Convert to fraction form
    1,454.59/2,181.38 = 480.45/x
  3. Step 3: Cross multiply
    1,454.59x = 2,181.38 × 480.45
  4. Step 4: Simplify right side
    1,454.59x = 1,048,044.02
  5. Step 5: Solve for x
    x = 1,048,044.02/1,454.59
  6. Step 6: Final answer
    x = 720.51

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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.