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Finding the Fourth Proportional to 2,408.68, 3,612.38 and 947.56

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Solution

The fourth proportional to 2,408.68, 3,612.38 and 947.56 is: 1,421.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.68 : 3,612.38 = 947.56 : x
  2. Step 2: Convert to fraction form
    2,408.68/3,612.38 = 947.56/x
  3. Step 3: Cross multiply
    2,408.68x = 3,612.38 × 947.56
  4. Step 4: Simplify right side
    2,408.68x = 3,422,946.79
  5. Step 5: Solve for x
    x = 3,422,946.79/2,408.68
  6. Step 6: Final answer
    x = 1,421.09

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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.