Home / 1,262.73-1,741.32-1,139.67

Finding the Fourth Proportional to 1,262.73, 1,741.32 and 1,139.67

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Solution

The fourth proportional to 1,262.73, 1,741.32 and 1,139.67 is: 1,571.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,262.73 : 1,741.32 = 1,139.67 : x
  2. Step 2: Convert to fraction form
    1,262.73/1,741.32 = 1,139.67/x
  3. Step 3: Cross multiply
    1,262.73x = 1,741.32 × 1,139.67
  4. Step 4: Simplify right side
    1,262.73x = 1,984,530.16
  5. Step 5: Solve for x
    x = 1,984,530.16/1,262.73
  6. Step 6: Final answer
    x = 1,571.62

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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.