Home / 1,438.39-1,968-1,432.99

Finding the Fourth Proportional to 1,438.39, 1,968 and 1,432.99

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Solution

The fourth proportional to 1,438.39, 1,968 and 1,432.99 is: 1,960.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,438.39 : 1,968 = 1,432.99 : x
  2. Step 2: Convert to fraction form
    1,438.39/1,968 = 1,432.99/x
  3. Step 3: Cross multiply
    1,438.39x = 1,968 × 1,432.99
  4. Step 4: Simplify right side
    1,438.39x = 2,820,124.32
  5. Step 5: Solve for x
    x = 2,820,124.32/1,438.39
  6. Step 6: Final answer
    x = 1,960.61

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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.