Home / 1,913.38-2,642.31-1,648.87

Finding the Fourth Proportional to 1,913.38, 2,642.31 and 1,648.87

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Solution

The fourth proportional to 1,913.38, 2,642.31 and 1,648.87 is: 2,277.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.38 : 2,642.31 = 1,648.87 : x
  2. Step 2: Convert to fraction form
    1,913.38/2,642.31 = 1,648.87/x
  3. Step 3: Cross multiply
    1,913.38x = 2,642.31 × 1,648.87
  4. Step 4: Simplify right side
    1,913.38x = 4,356,825.69
  5. Step 5: Solve for x
    x = 4,356,825.69/1,913.38
  6. Step 6: Final answer
    x = 2,277.03

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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.