Home / 1,715.68-2,369.36-1,185.96

Finding the Fourth Proportional to 1,715.68, 2,369.36 and 1,185.96

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Solution

The fourth proportional to 1,715.68, 2,369.36 and 1,185.96 is: 1,637.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.68 : 2,369.36 = 1,185.96 : x
  2. Step 2: Convert to fraction form
    1,715.68/2,369.36 = 1,185.96/x
  3. Step 3: Cross multiply
    1,715.68x = 2,369.36 × 1,185.96
  4. Step 4: Simplify right side
    1,715.68x = 2,809,966.19
  5. Step 5: Solve for x
    x = 2,809,966.19/1,715.68
  6. Step 6: Final answer
    x = 1,637.81

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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.