Home / 2,121.14-2,926.58-1,375.13

Finding the Fourth Proportional to 2,121.14, 2,926.58 and 1,375.13

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Solution

The fourth proportional to 2,121.14, 2,926.58 and 1,375.13 is: 1,897.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.14 : 2,926.58 = 1,375.13 : x
  2. Step 2: Convert to fraction form
    2,121.14/2,926.58 = 1,375.13/x
  3. Step 3: Cross multiply
    2,121.14x = 2,926.58 × 1,375.13
  4. Step 4: Simplify right side
    2,121.14x = 4,024,421.08
  5. Step 5: Solve for x
    x = 4,024,421.08/2,121.14
  6. Step 6: Final answer
    x = 1,897.29

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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.