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Finding the Fourth Proportional to 2,767.10, 4,150.88 and 918.16

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Solution

The fourth proportional to 2,767.10, 4,150.88 and 918.16 is: 1,377.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,767.10 : 4,150.88 = 918.16 : x
  2. Step 2: Convert to fraction form
    2,767.10/4,150.88 = 918.16/x
  3. Step 3: Cross multiply
    2,767.10x = 4,150.88 × 918.16
  4. Step 4: Simplify right side
    2,767.10x = 3,811,171.98
  5. Step 5: Solve for x
    x = 3,811,171.98/2,767.10
  6. Step 6: Final answer
    x = 1,377.32

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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.