Home / 3,428.23-4,728.49-2,231

Finding the Fourth Proportional to 3,428.23, 4,728.49 and 2,231

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Solution

The fourth proportional to 3,428.23, 4,728.49 and 2,231 is: 3,077.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,428.23 : 4,728.49 = 2,231 : x
  2. Step 2: Convert to fraction form
    3,428.23/4,728.49 = 2,231/x
  3. Step 3: Cross multiply
    3,428.23x = 4,728.49 × 2,231
  4. Step 4: Simplify right side
    3,428.23x = 10,549,261.19
  5. Step 5: Solve for x
    x = 10,549,261.19/3,428.23
  6. Step 6: Final answer
    x = 3,077.17

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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.