Home / 1,112.92-1,669.56-535.72

Finding the Fourth Proportional to 1,112.92, 1,669.56 and 535.72

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Solution

The fourth proportional to 1,112.92, 1,669.56 and 535.72 is: 803.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,112.92 : 1,669.56 = 535.72 : x
  2. Step 2: Convert to fraction form
    1,112.92/1,669.56 = 535.72/x
  3. Step 3: Cross multiply
    1,112.92x = 1,669.56 × 535.72
  4. Step 4: Simplify right side
    1,112.92x = 894,416.68
  5. Step 5: Solve for x
    x = 894,416.68/1,112.92
  6. Step 6: Final answer
    x = 803.67

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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.