Home / 3,123.54-4,689.36-2,199.51

Finding the Fourth Proportional to 3,123.54, 4,689.36 and 2,199.51

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Solution

The fourth proportional to 3,123.54, 4,689.36 and 2,199.51 is: 3,302.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.54 : 4,689.36 = 2,199.51 : x
  2. Step 2: Convert to fraction form
    3,123.54/4,689.36 = 2,199.51/x
  3. Step 3: Cross multiply
    3,123.54x = 4,689.36 × 2,199.51
  4. Step 4: Simplify right side
    3,123.54x = 10,314,294.21
  5. Step 5: Solve for x
    x = 10,314,294.21/3,123.54
  6. Step 6: Final answer
    x = 3,302.12

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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.