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Finding the Fourth Proportional to 2,865.99, 4,299.04 and 918.19

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Solution

The fourth proportional to 2,865.99, 4,299.04 and 918.19 is: 1,377.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.99 : 4,299.04 = 918.19 : x
  2. Step 2: Convert to fraction form
    2,865.99/4,299.04 = 918.19/x
  3. Step 3: Cross multiply
    2,865.99x = 4,299.04 × 918.19
  4. Step 4: Simplify right side
    2,865.99x = 3,947,309.45
  5. Step 5: Solve for x
    x = 3,947,309.45/2,865.99
  6. Step 6: Final answer
    x = 1,377.30

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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.