Home / 10,782.28-16,172.97-2,990.89

Finding the Fourth Proportional to 10,782.28, 16,172.97 and 2,990.89

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Solution

The fourth proportional to 10,782.28, 16,172.97 and 2,990.89 is: 4,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,782.28 : 16,172.97 = 2,990.89 : x
  2. Step 2: Convert to fraction form
    10,782.28/16,172.97 = 2,990.89/x
  3. Step 3: Cross multiply
    10,782.28x = 16,172.97 × 2,990.89
  4. Step 4: Simplify right side
    10,782.28x = 48,371,574.24
  5. Step 5: Solve for x
    x = 48,371,574.24/10,782.28
  6. Step 6: Final answer
    x = 4,486.21

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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.