Home / 2,981.05-4,114.23-1,802.12

Finding the Fourth Proportional to 2,981.05, 4,114.23 and 1,802.12

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Solution

The fourth proportional to 2,981.05, 4,114.23 and 1,802.12 is: 2,487.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.05 : 4,114.23 = 1,802.12 : x
  2. Step 2: Convert to fraction form
    2,981.05/4,114.23 = 1,802.12/x
  3. Step 3: Cross multiply
    2,981.05x = 4,114.23 × 1,802.12
  4. Step 4: Simplify right side
    2,981.05x = 7,414,306.59
  5. Step 5: Solve for x
    x = 7,414,306.59/2,981.05
  6. Step 6: Final answer
    x = 2,487.15

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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.