Home / 1,715.40-2,351.84-1,684.17

Finding the Fourth Proportional to 1,715.40, 2,351.84 and 1,684.17

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Solution

The fourth proportional to 1,715.40, 2,351.84 and 1,684.17 is: 2,309.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,715.40 : 2,351.84 = 1,684.17 : x
  2. Step 2: Convert to fraction form
    1,715.40/2,351.84 = 1,684.17/x
  3. Step 3: Cross multiply
    1,715.40x = 2,351.84 × 1,684.17
  4. Step 4: Simplify right side
    1,715.40x = 3,960,889.95
  5. Step 5: Solve for x
    x = 3,960,889.95/1,715.40
  6. Step 6: Final answer
    x = 2,309.02

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.