Home / 2,127.22-3,186.15-1,715.38

Finding the Fourth Proportional to 2,127.22, 3,186.15 and 1,715.38

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Solution

The fourth proportional to 2,127.22, 3,186.15 and 1,715.38 is: 2,569.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,127.22 : 3,186.15 = 1,715.38 : x
  2. Step 2: Convert to fraction form
    2,127.22/3,186.15 = 1,715.38/x
  3. Step 3: Cross multiply
    2,127.22x = 3,186.15 × 1,715.38
  4. Step 4: Simplify right side
    2,127.22x = 5,465,457.99
  5. Step 5: Solve for x
    x = 5,465,457.99/2,127.22
  6. Step 6: Final answer
    x = 2,569.30

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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.