Home / 5,113.72-7,664.10-2,188.81

Finding the Fourth Proportional to 5,113.72, 7,664.10 and 2,188.81

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Solution

The fourth proportional to 5,113.72, 7,664.10 and 2,188.81 is: 3,280.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,113.72 : 7,664.10 = 2,188.81 : x
  2. Step 2: Convert to fraction form
    5,113.72/7,664.10 = 2,188.81/x
  3. Step 3: Cross multiply
    5,113.72x = 7,664.10 × 2,188.81
  4. Step 4: Simplify right side
    5,113.72x = 16,775,258.72
  5. Step 5: Solve for x
    x = 16,775,258.72/5,113.72
  6. Step 6: Final answer
    x = 3,280.44

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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.