Home / 2,455.11-3,381.48-2,123.55

Finding the Fourth Proportional to 2,455.11, 3,381.48 and 2,123.55

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Solution

The fourth proportional to 2,455.11, 3,381.48 and 2,123.55 is: 2,924.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,455.11 : 3,381.48 = 2,123.55 : x
  2. Step 2: Convert to fraction form
    2,455.11/3,381.48 = 2,123.55/x
  3. Step 3: Cross multiply
    2,455.11x = 3,381.48 × 2,123.55
  4. Step 4: Simplify right side
    2,455.11x = 7,180,741.85
  5. Step 5: Solve for x
    x = 7,180,741.85/2,455.11
  6. Step 6: Final answer
    x = 2,924.81

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.