Home / 3,312.90-4,962.13-2,138.81

Finding the Fourth Proportional to 3,312.90, 4,962.13 and 2,138.81

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Solution

The fourth proportional to 3,312.90, 4,962.13 and 2,138.81 is: 3,203.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,312.90 : 4,962.13 = 2,138.81 : x
  2. Step 2: Convert to fraction form
    3,312.90/4,962.13 = 2,138.81/x
  3. Step 3: Cross multiply
    3,312.90x = 4,962.13 × 2,138.81
  4. Step 4: Simplify right side
    3,312.90x = 10,613,023.11
  5. Step 5: Solve for x
    x = 10,613,023.11/3,312.90
  6. Step 6: Final answer
    x = 3,203.54

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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.