Home / 2,972.90-4,102.63-1,646.63

Finding the Fourth Proportional to 2,972.90, 4,102.63 and 1,646.63

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Solution

The fourth proportional to 2,972.90, 4,102.63 and 1,646.63 is: 2,272.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,972.90 : 4,102.63 = 1,646.63 : x
  2. Step 2: Convert to fraction form
    2,972.90/4,102.63 = 1,646.63/x
  3. Step 3: Cross multiply
    2,972.90x = 4,102.63 × 1,646.63
  4. Step 4: Simplify right side
    2,972.90x = 6,755,493.12
  5. Step 5: Solve for x
    x = 6,755,493.12/2,972.90
  6. Step 6: Final answer
    x = 2,272.36

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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.