Home / 2,981.35-4,111.43-2,173.07

Finding the Fourth Proportional to 2,981.35, 4,111.43 and 2,173.07

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Solution

The fourth proportional to 2,981.35, 4,111.43 and 2,173.07 is: 2,996.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.35 : 4,111.43 = 2,173.07 : x
  2. Step 2: Convert to fraction form
    2,981.35/4,111.43 = 2,173.07/x
  3. Step 3: Cross multiply
    2,981.35x = 4,111.43 × 2,173.07
  4. Step 4: Simplify right side
    2,981.35x = 8,934,425.19
  5. Step 5: Solve for x
    x = 8,934,425.19/2,981.35
  6. Step 6: Final answer
    x = 2,996.77

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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.