Home / 2,126.81-3,191.46-894.13

Finding the Fourth Proportional to 2,126.81, 3,191.46 and 894.13

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Solution

The fourth proportional to 2,126.81, 3,191.46 and 894.13 is: 1,341.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,126.81 : 3,191.46 = 894.13 : x
  2. Step 2: Convert to fraction form
    2,126.81/3,191.46 = 894.13/x
  3. Step 3: Cross multiply
    2,126.81x = 3,191.46 × 894.13
  4. Step 4: Simplify right side
    2,126.81x = 2,853,580.13
  5. Step 5: Solve for x
    x = 2,853,580.13/2,126.81
  6. Step 6: Final answer
    x = 1,341.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.