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Finding the Fourth Proportional to 2,110.74, 3,166.65 and 649.91

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Solution

The fourth proportional to 2,110.74, 3,166.65 and 649.91 is: 975.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,110.74 : 3,166.65 = 649.91 : x
  2. Step 2: Convert to fraction form
    2,110.74/3,166.65 = 649.91/x
  3. Step 3: Cross multiply
    2,110.74x = 3,166.65 × 649.91
  4. Step 4: Simplify right side
    2,110.74x = 2,058,021.67
  5. Step 5: Solve for x
    x = 2,058,021.67/2,110.74
  6. Step 6: Final answer
    x = 975.02

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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.