Home / 1,926.20-2,658.48-1,140.68

Finding the Fourth Proportional to 1,926.20, 2,658.48 and 1,140.68

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Solution

The fourth proportional to 1,926.20, 2,658.48 and 1,140.68 is: 1,574.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,926.20 : 2,658.48 = 1,140.68 : x
  2. Step 2: Convert to fraction form
    1,926.20/2,658.48 = 1,140.68/x
  3. Step 3: Cross multiply
    1,926.20x = 2,658.48 × 1,140.68
  4. Step 4: Simplify right side
    1,926.20x = 3,032,474.97
  5. Step 5: Solve for x
    x = 3,032,474.97/1,926.20
  6. Step 6: Final answer
    x = 1,574.33

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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.