Home / 2,972.85-4,102.56-1,646.63

Finding the Fourth Proportional to 2,972.85, 4,102.56 and 1,646.63

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Solution

The fourth proportional to 2,972.85, 4,102.56 and 1,646.63 is: 2,272.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.85 : 4,102.56 = 1,646.63 : x
  2. Step 2: Convert to fraction form
    2,972.85/4,102.56 = 1,646.63/x
  3. Step 3: Cross multiply
    2,972.85x = 4,102.56 × 1,646.63
  4. Step 4: Simplify right side
    2,972.85x = 6,755,393.24
  5. Step 5: Solve for x
    x = 6,755,393.24/2,972.85
  6. Step 6: Final answer
    x = 2,272.37

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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.