Home / 2,948.55-4,065.44-2,161.23

Finding the Fourth Proportional to 2,948.55, 4,065.44 and 2,161.23

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Solution

The fourth proportional to 2,948.55, 4,065.44 and 2,161.23 is: 2,979.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,948.55 : 4,065.44 = 2,161.23 : x
  2. Step 2: Convert to fraction form
    2,948.55/4,065.44 = 2,161.23/x
  3. Step 3: Cross multiply
    2,948.55x = 4,065.44 × 2,161.23
  4. Step 4: Simplify right side
    2,948.55x = 8,786,340.09
  5. Step 5: Solve for x
    x = 8,786,340.09/2,948.55
  6. Step 6: Final answer
    x = 2,979.89

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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.