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Finding the Fourth Proportional to 2,408.76, 3,612.90 and 947.52

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Solution

The fourth proportional to 2,408.76, 3,612.90 and 947.52 is: 1,421.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.76 : 3,612.90 = 947.52 : x
  2. Step 2: Convert to fraction form
    2,408.76/3,612.90 = 947.52/x
  3. Step 3: Cross multiply
    2,408.76x = 3,612.90 × 947.52
  4. Step 4: Simplify right side
    2,408.76x = 3,423,295.01
  5. Step 5: Solve for x
    x = 3,423,295.01/2,408.76
  6. Step 6: Final answer
    x = 1,421.19

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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.