Home / 2,408.55-3,612.21-947.72

Finding the Fourth Proportional to 2,408.55, 3,612.21 and 947.72

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Solution

The fourth proportional to 2,408.55, 3,612.21 and 947.72 is: 1,421.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,408.55 : 3,612.21 = 947.72 : x
  2. Step 2: Convert to fraction form
    2,408.55/3,612.21 = 947.72/x
  3. Step 3: Cross multiply
    2,408.55x = 3,612.21 × 947.72
  4. Step 4: Simplify right side
    2,408.55x = 3,423,345.60
  5. Step 5: Solve for x
    x = 3,423,345.60/2,408.55
  6. Step 6: Final answer
    x = 1,421.33

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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.