Home / 1,938.21-2,674.53-1,152.11

Finding the Fourth Proportional to 1,938.21, 2,674.53 and 1,152.11

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Solution

The fourth proportional to 1,938.21, 2,674.53 and 1,152.11 is: 1,589.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.21 : 2,674.53 = 1,152.11 : x
  2. Step 2: Convert to fraction form
    1,938.21/2,674.53 = 1,152.11/x
  3. Step 3: Cross multiply
    1,938.21x = 2,674.53 × 1,152.11
  4. Step 4: Simplify right side
    1,938.21x = 3,081,339.39
  5. Step 5: Solve for x
    x = 3,081,339.39/1,938.21
  6. Step 6: Final answer
    x = 1,589.79

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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.