Home / 2,981.15-4,112.08-2,351.47

Finding the Fourth Proportional to 2,981.15, 4,112.08 and 2,351.47

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Solution

The fourth proportional to 2,981.15, 4,112.08 and 2,351.47 is: 3,243.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,981.15 : 4,112.08 = 2,351.47 : x
  2. Step 2: Convert to fraction form
    2,981.15/4,112.08 = 2,351.47/x
  3. Step 3: Cross multiply
    2,981.15x = 4,112.08 × 2,351.47
  4. Step 4: Simplify right side
    2,981.15x = 9,669,416.60
  5. Step 5: Solve for x
    x = 9,669,416.60/2,981.15
  6. Step 6: Final answer
    x = 3,243.52

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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.