Home / 2,126.85-2,935.98-1,242.51

Finding the Fourth Proportional to 2,126.85, 2,935.98 and 1,242.51

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Solution

The fourth proportional to 2,126.85, 2,935.98 and 1,242.51 is: 1,715.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.85 : 2,935.98 = 1,242.51 : x
  2. Step 2: Convert to fraction form
    2,126.85/2,935.98 = 1,242.51/x
  3. Step 3: Cross multiply
    2,126.85x = 2,935.98 × 1,242.51
  4. Step 4: Simplify right side
    2,126.85x = 3,647,984.51
  5. Step 5: Solve for x
    x = 3,647,984.51/2,126.85
  6. Step 6: Final answer
    x = 1,715.21

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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.