Home / 2,121.52-2,926.68-1,270.36

Finding the Fourth Proportional to 2,121.52, 2,926.68 and 1,270.36

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Solution

The fourth proportional to 2,121.52, 2,926.68 and 1,270.36 is: 1,752.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,121.52 : 2,926.68 = 1,270.36 : x
  2. Step 2: Convert to fraction form
    2,121.52/2,926.68 = 1,270.36/x
  3. Step 3: Cross multiply
    2,121.52x = 2,926.68 × 1,270.36
  4. Step 4: Simplify right side
    2,121.52x = 3,717,935.01
  5. Step 5: Solve for x
    x = 3,717,935.01/2,121.52
  6. Step 6: Final answer
    x = 1,752.49

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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.