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Finding the Fourth Proportional to 3,377.13, 5,065.66 and 912.19

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Solution

The fourth proportional to 3,377.13, 5,065.66 and 912.19 is: 1,368.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,377.13 : 5,065.66 = 912.19 : x
  2. Step 2: Convert to fraction form
    3,377.13/5,065.66 = 912.19/x
  3. Step 3: Cross multiply
    3,377.13x = 5,065.66 × 912.19
  4. Step 4: Simplify right side
    3,377.13x = 4,620,844.40
  5. Step 5: Solve for x
    x = 4,620,844.40/3,377.13
  6. Step 6: Final answer
    x = 1,368.28

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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.