Home / 5,111.02-7,051.44-2,872.54

Finding the Fourth Proportional to 5,111.02, 7,051.44 and 2,872.54

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Solution

The fourth proportional to 5,111.02, 7,051.44 and 2,872.54 is: 3,963.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,111.02 : 7,051.44 = 2,872.54 : x
  2. Step 2: Convert to fraction form
    5,111.02/7,051.44 = 2,872.54/x
  3. Step 3: Cross multiply
    5,111.02x = 7,051.44 × 2,872.54
  4. Step 4: Simplify right side
    5,111.02x = 20,255,543.46
  5. Step 5: Solve for x
    x = 20,255,543.46/5,111.02
  6. Step 6: Final answer
    x = 3,963.11

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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.