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Finding the Fourth Proportional to 1,566.08, 2,161.17 and 857.93

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Solution

The fourth proportional to 1,566.08, 2,161.17 and 857.93 is: 1,183.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,566.08 : 2,161.17 = 857.93 : x
  2. Step 2: Convert to fraction form
    1,566.08/2,161.17 = 857.93/x
  3. Step 3: Cross multiply
    1,566.08x = 2,161.17 × 857.93
  4. Step 4: Simplify right side
    1,566.08x = 1,854,121.77
  5. Step 5: Solve for x
    x = 1,854,121.77/1,566.08
  6. Step 6: Final answer
    x = 1,183.93

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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.