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Finding the Fourth Proportional to 2,439.72, 3,659.58 and 1,413

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Solution

The fourth proportional to 2,439.72, 3,659.58 and 1,413 is: 2,119.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,439.72 : 3,659.58 = 1,413 : x
  2. Step 2: Convert to fraction form
    2,439.72/3,659.58 = 1,413/x
  3. Step 3: Cross multiply
    2,439.72x = 3,659.58 × 1,413
  4. Step 4: Simplify right side
    2,439.72x = 5,170,986.54
  5. Step 5: Solve for x
    x = 5,170,986.54/2,439.72
  6. Step 6: Final answer
    x = 2,119.50

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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.