Home / 1,688.12-2,532.44-714.48

Finding the Fourth Proportional to 1,688.12, 2,532.44 and 714.48

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Solution

The fourth proportional to 1,688.12, 2,532.44 and 714.48 is: 1,071.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,688.12 : 2,532.44 = 714.48 : x
  2. Step 2: Convert to fraction form
    1,688.12/2,532.44 = 714.48/x
  3. Step 3: Cross multiply
    1,688.12x = 2,532.44 × 714.48
  4. Step 4: Simplify right side
    1,688.12x = 1,809,377.73
  5. Step 5: Solve for x
    x = 1,809,377.73/1,688.12
  6. Step 6: Final answer
    x = 1,071.83

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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.