Home / 2,121.39-2,926.23-1,522.70

Finding the Fourth Proportional to 2,121.39, 2,926.23 and 1,522.70

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Solution

The fourth proportional to 2,121.39, 2,926.23 and 1,522.70 is: 2,100.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.39 : 2,926.23 = 1,522.70 : x
  2. Step 2: Convert to fraction form
    2,121.39/2,926.23 = 1,522.70/x
  3. Step 3: Cross multiply
    2,121.39x = 2,926.23 × 1,522.70
  4. Step 4: Simplify right side
    2,121.39x = 4,455,761.05
  5. Step 5: Solve for x
    x = 4,455,761.05/2,121.39
  6. Step 6: Final answer
    x = 2,100.40

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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.