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Finding the Fourth Proportional to 2,314.36, 3,470.40 and 774.28

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Solution

The fourth proportional to 2,314.36, 3,470.40 and 774.28 is: 1,161.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,314.36 : 3,470.40 = 774.28 : x
  2. Step 2: Convert to fraction form
    2,314.36/3,470.40 = 774.28/x
  3. Step 3: Cross multiply
    2,314.36x = 3,470.40 × 774.28
  4. Step 4: Simplify right side
    2,314.36x = 2,687,061.31
  5. Step 5: Solve for x
    x = 2,687,061.31/2,314.36
  6. Step 6: Final answer
    x = 1,161.04

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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.