Home / 1,126.17-1,688.74-882.18

Finding the Fourth Proportional to 1,126.17, 1,688.74 and 882.18

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Solution

The fourth proportional to 1,126.17, 1,688.74 and 882.18 is: 1,322.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.17 : 1,688.74 = 882.18 : x
  2. Step 2: Convert to fraction form
    1,126.17/1,688.74 = 882.18/x
  3. Step 3: Cross multiply
    1,126.17x = 1,688.74 × 882.18
  4. Step 4: Simplify right side
    1,126.17x = 1,489,770.45
  5. Step 5: Solve for x
    x = 1,489,770.45/1,126.17
  6. Step 6: Final answer
    x = 1,322.86

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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.