Home / 2,491.03-3,436.86-1,428.67

Finding the Fourth Proportional to 2,491.03, 3,436.86 and 1,428.67

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Solution

The fourth proportional to 2,491.03, 3,436.86 and 1,428.67 is: 1,971.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,491.03 : 3,436.86 = 1,428.67 : x
  2. Step 2: Convert to fraction form
    2,491.03/3,436.86 = 1,428.67/x
  3. Step 3: Cross multiply
    2,491.03x = 3,436.86 × 1,428.67
  4. Step 4: Simplify right side
    2,491.03x = 4,910,138.78
  5. Step 5: Solve for x
    x = 4,910,138.78/2,491.03
  6. Step 6: Final answer
    x = 1,971.13

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1.5x scale

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.