Home / 1,926.38-2,658.40-1,228.16

Finding the Fourth Proportional to 1,926.38, 2,658.40 and 1,228.16

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Solution

The fourth proportional to 1,926.38, 2,658.40 and 1,228.16 is: 1,694.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.38 : 2,658.40 = 1,228.16 : x
  2. Step 2: Convert to fraction form
    1,926.38/2,658.40 = 1,228.16/x
  3. Step 3: Cross multiply
    1,926.38x = 2,658.40 × 1,228.16
  4. Step 4: Simplify right side
    1,926.38x = 3,264,924.18
  5. Step 5: Solve for x
    x = 3,264,924.18/1,926.38
  6. Step 6: Final answer
    x = 1,694.85

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1.5x scale

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.