Home / 3,711.19-5,121.73-2,117.47

Finding the Fourth Proportional to 3,711.19, 5,121.73 and 2,117.47

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Solution

The fourth proportional to 3,711.19, 5,121.73 and 2,117.47 is: 2,922.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,711.19 : 5,121.73 = 2,117.47 : x
  2. Step 2: Convert to fraction form
    3,711.19/5,121.73 = 2,117.47/x
  3. Step 3: Cross multiply
    3,711.19x = 5,121.73 × 2,117.47
  4. Step 4: Simplify right side
    3,711.19x = 10,845,088.71
  5. Step 5: Solve for x
    x = 10,845,088.71/3,711.19
  6. Step 6: Final answer
    x = 2,922.27

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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.