Home / 2,126.49-2,934.81-1,287.48

Finding the Fourth Proportional to 2,126.49, 2,934.81 and 1,287.48

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Solution

The fourth proportional to 2,126.49, 2,934.81 and 1,287.48 is: 1,776.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.49 : 2,934.81 = 1,287.48 : x
  2. Step 2: Convert to fraction form
    2,126.49/2,934.81 = 1,287.48/x
  3. Step 3: Cross multiply
    2,126.49x = 2,934.81 × 1,287.48
  4. Step 4: Simplify right side
    2,126.49x = 3,778,509.18
  5. Step 5: Solve for x
    x = 3,778,509.18/2,126.49
  6. Step 6: Final answer
    x = 1,776.88

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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.