Home / 1,967.10-2,715.96-1,378.42

Finding the Fourth Proportional to 1,967.10, 2,715.96 and 1,378.42

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Solution

The fourth proportional to 1,967.10, 2,715.96 and 1,378.42 is: 1,903.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,967.10 : 2,715.96 = 1,378.42 : x
  2. Step 2: Convert to fraction form
    1,967.10/2,715.96 = 1,378.42/x
  3. Step 3: Cross multiply
    1,967.10x = 2,715.96 × 1,378.42
  4. Step 4: Simplify right side
    1,967.10x = 3,743,733.58
  5. Step 5: Solve for x
    x = 3,743,733.58/1,967.10
  6. Step 6: Final answer
    x = 1,903.17

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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.