Home / 2,111.02-3,166.80-649.90

Finding the Fourth Proportional to 2,111.02, 3,166.80 and 649.90

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Solution

The fourth proportional to 2,111.02, 3,166.80 and 649.90 is: 974.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,111.02 : 3,166.80 = 649.90 : x
  2. Step 2: Convert to fraction form
    2,111.02/3,166.80 = 649.90/x
  3. Step 3: Cross multiply
    2,111.02x = 3,166.80 × 649.90
  4. Step 4: Simplify right side
    2,111.02x = 2,058,103.32
  5. Step 5: Solve for x
    x = 2,058,103.32/2,111.02
  6. Step 6: Final answer
    x = 974.93

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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.