Home / 1,926.78-2,658.95-1,042.58

Finding the Fourth Proportional to 1,926.78, 2,658.95 and 1,042.58

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Solution

The fourth proportional to 1,926.78, 2,658.95 and 1,042.58 is: 1,438.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.78 : 2,658.95 = 1,042.58 : x
  2. Step 2: Convert to fraction form
    1,926.78/2,658.95 = 1,042.58/x
  3. Step 3: Cross multiply
    1,926.78x = 2,658.95 × 1,042.58
  4. Step 4: Simplify right side
    1,926.78x = 2,772,168.09
  5. Step 5: Solve for x
    x = 2,772,168.09/1,926.78
  6. Step 6: Final answer
    x = 1,438.76

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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.