Home / 1,921.05-2,651.85-1,502.55

Finding the Fourth Proportional to 1,921.05, 2,651.85 and 1,502.55

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Solution

The fourth proportional to 1,921.05, 2,651.85 and 1,502.55 is: 2,074.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.05 : 2,651.85 = 1,502.55 : x
  2. Step 2: Convert to fraction form
    1,921.05/2,651.85 = 1,502.55/x
  3. Step 3: Cross multiply
    1,921.05x = 2,651.85 × 1,502.55
  4. Step 4: Simplify right side
    1,921.05x = 3,984,537.22
  5. Step 5: Solve for x
    x = 3,984,537.22/1,921.05
  6. Step 6: Final answer
    x = 2,074.15

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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.