Home / 2,981.70-4,472.55-1,828.10

Finding the Fourth Proportional to 2,981.70, 4,472.55 and 1,828.10

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Solution

The fourth proportional to 2,981.70, 4,472.55 and 1,828.10 is: 2,742.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.70 : 4,472.55 = 1,828.10 : x
  2. Step 2: Convert to fraction form
    2,981.70/4,472.55 = 1,828.10/x
  3. Step 3: Cross multiply
    2,981.70x = 4,472.55 × 1,828.10
  4. Step 4: Simplify right side
    2,981.70x = 8,176,268.66
  5. Step 5: Solve for x
    x = 8,176,268.66/2,981.70
  6. Step 6: Final answer
    x = 2,742.15

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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.