Home / 3,123.54-4,314.03-2,127.09

Finding the Fourth Proportional to 3,123.54, 4,314.03 and 2,127.09

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Solution

The fourth proportional to 3,123.54, 4,314.03 and 2,127.09 is: 2,937.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.54 : 4,314.03 = 2,127.09 : x
  2. Step 2: Convert to fraction form
    3,123.54/4,314.03 = 2,127.09/x
  3. Step 3: Cross multiply
    3,123.54x = 4,314.03 × 2,127.09
  4. Step 4: Simplify right side
    3,123.54x = 9,176,330.07
  5. Step 5: Solve for x
    x = 9,176,330.07/3,123.54
  6. Step 6: Final answer
    x = 2,937.80

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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.