Home / 1,938.42-2,674.08-1,151.91

Finding the Fourth Proportional to 1,938.42, 2,674.08 and 1,151.91

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Solution

The fourth proportional to 1,938.42, 2,674.08 and 1,151.91 is: 1,589.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.42 : 2,674.08 = 1,151.91 : x
  2. Step 2: Convert to fraction form
    1,938.42/2,674.08 = 1,151.91/x
  3. Step 3: Cross multiply
    1,938.42x = 2,674.08 × 1,151.91
  4. Step 4: Simplify right side
    1,938.42x = 3,080,299.49
  5. Step 5: Solve for x
    x = 3,080,299.49/1,938.42
  6. Step 6: Final answer
    x = 1,589.08

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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.