Home / 5,639.14-7,778.93-3,399.66

Finding the Fourth Proportional to 5,639.14, 7,778.93 and 3,399.66

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Solution

The fourth proportional to 5,639.14, 7,778.93 and 3,399.66 is: 4,689.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,639.14 : 7,778.93 = 3,399.66 : x
  2. Step 2: Convert to fraction form
    5,639.14/7,778.93 = 3,399.66/x
  3. Step 3: Cross multiply
    5,639.14x = 7,778.93 × 3,399.66
  4. Step 4: Simplify right side
    5,639.14x = 26,445,717.16
  5. Step 5: Solve for x
    x = 26,445,717.16/5,639.14
  6. Step 6: Final answer
    x = 4,689.67

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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.