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Finding the Fourth Proportional to 1,785.65, 2,464.22 and 999.74

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Solution

The fourth proportional to 1,785.65, 2,464.22 and 999.74 is: 1,379.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,785.65 : 2,464.22 = 999.74 : x
  2. Step 2: Convert to fraction form
    1,785.65/2,464.22 = 999.74/x
  3. Step 3: Cross multiply
    1,785.65x = 2,464.22 × 999.74
  4. Step 4: Simplify right side
    1,785.65x = 2,463,587.96
  5. Step 5: Solve for x
    x = 2,463,587.96/1,785.65
  6. Step 6: Final answer
    x = 1,379.66

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.