Home / 5,138.19-7,688.34-3,632.76

Finding the Fourth Proportional to 5,138.19, 7,688.34 and 3,632.76

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Solution

The fourth proportional to 5,138.19, 7,688.34 and 3,632.76 is: 5,435.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,138.19 : 7,688.34 = 3,632.76 : x
  2. Step 2: Convert to fraction form
    5,138.19/7,688.34 = 3,632.76/x
  3. Step 3: Cross multiply
    5,138.19x = 7,688.34 × 3,632.76
  4. Step 4: Simplify right side
    5,138.19x = 27,929,894.02
  5. Step 5: Solve for x
    x = 27,929,894.02/5,138.19
  6. Step 6: Final answer
    x = 5,435.75

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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.