Home / 1,126.18-1,688.84-508.73

Finding the Fourth Proportional to 1,126.18, 1,688.84 and 508.73

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Solution

The fourth proportional to 1,126.18, 1,688.84 and 508.73 is: 762.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.18 : 1,688.84 = 508.73 : x
  2. Step 2: Convert to fraction form
    1,126.18/1,688.84 = 508.73/x
  3. Step 3: Cross multiply
    1,126.18x = 1,688.84 × 508.73
  4. Step 4: Simplify right side
    1,126.18x = 859,161.03
  5. Step 5: Solve for x
    x = 859,161.03/1,126.18
  6. Step 6: Final answer
    x = 762.90

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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.