Home / 7,954.02-11,931.30-2,111.22

Finding the Fourth Proportional to 7,954.02, 11,931.30 and 2,111.22

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Solution

The fourth proportional to 7,954.02, 11,931.30 and 2,111.22 is: 3,166.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,954.02 : 11,931.30 = 2,111.22 : x
  2. Step 2: Convert to fraction form
    7,954.02/11,931.30 = 2,111.22/x
  3. Step 3: Cross multiply
    7,954.02x = 11,931.30 × 2,111.22
  4. Step 4: Simplify right side
    7,954.02x = 25,189,599.19
  5. Step 5: Solve for x
    x = 25,189,599.19/7,954.02
  6. Step 6: Final answer
    x = 3,166.90

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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.