Home / 3,612.87-5,419.35-1,147.77

Finding the Fourth Proportional to 3,612.87, 5,419.35 and 1,147.77

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Solution

The fourth proportional to 3,612.87, 5,419.35 and 1,147.77 is: 1,721.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.87 : 5,419.35 = 1,147.77 : x
  2. Step 2: Convert to fraction form
    3,612.87/5,419.35 = 1,147.77/x
  3. Step 3: Cross multiply
    3,612.87x = 5,419.35 × 1,147.77
  4. Step 4: Simplify right side
    3,612.87x = 6,220,167.35
  5. Step 5: Solve for x
    x = 6,220,167.35/3,612.87
  6. Step 6: Final answer
    x = 1,721.67

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1.5x scale

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.