Home / 2,982.16-4,111.88-2,420.86

Finding the Fourth Proportional to 2,982.16, 4,111.88 and 2,420.86

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Solution

The fourth proportional to 2,982.16, 4,111.88 and 2,420.86 is: 3,337.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,982.16 : 4,111.88 = 2,420.86 : x
  2. Step 2: Convert to fraction form
    2,982.16/4,111.88 = 2,420.86/x
  3. Step 3: Cross multiply
    2,982.16x = 4,111.88 × 2,420.86
  4. Step 4: Simplify right side
    2,982.16x = 9,954,273.71
  5. Step 5: Solve for x
    x = 9,954,273.71/2,982.16
  6. Step 6: Final answer
    x = 3,337.94

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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.