Home / 1,239.29-1,709.33-1,052.49

Finding the Fourth Proportional to 1,239.29, 1,709.33 and 1,052.49

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Solution

The fourth proportional to 1,239.29, 1,709.33 and 1,052.49 is: 1,451.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,239.29 : 1,709.33 = 1,052.49 : x
  2. Step 2: Convert to fraction form
    1,239.29/1,709.33 = 1,052.49/x
  3. Step 3: Cross multiply
    1,239.29x = 1,709.33 × 1,052.49
  4. Step 4: Simplify right side
    1,239.29x = 1,799,038.92
  5. Step 5: Solve for x
    x = 1,799,038.92/1,239.29
  6. Step 6: Final answer
    x = 1,451.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.