Home / 1,919.18-2,648.40-1,174.38

Finding the Fourth Proportional to 1,919.18, 2,648.40 and 1,174.38

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Solution

The fourth proportional to 1,919.18, 2,648.40 and 1,174.38 is: 1,620.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.18 : 2,648.40 = 1,174.38 : x
  2. Step 2: Convert to fraction form
    1,919.18/2,648.40 = 1,174.38/x
  3. Step 3: Cross multiply
    1,919.18x = 2,648.40 × 1,174.38
  4. Step 4: Simplify right side
    1,919.18x = 3,110,227.99
  5. Step 5: Solve for x
    x = 3,110,227.99/1,919.18
  6. Step 6: Final answer
    x = 1,620.60

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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.