Home / 2,128.79-2,937.93-1,244.54

Finding the Fourth Proportional to 2,128.79, 2,937.93 and 1,244.54

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Solution

The fourth proportional to 2,128.79, 2,937.93 and 1,244.54 is: 1,717.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,128.79 : 2,937.93 = 1,244.54 : x
  2. Step 2: Convert to fraction form
    2,128.79/2,937.93 = 1,244.54/x
  3. Step 3: Cross multiply
    2,128.79x = 2,937.93 × 1,244.54
  4. Step 4: Simplify right side
    2,128.79x = 3,656,371.40
  5. Step 5: Solve for x
    x = 3,656,371.40/2,128.79
  6. Step 6: Final answer
    x = 1,717.58

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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.