Home / 5,188.16-7,782.24-2,112.32

Finding the Fourth Proportional to 5,188.16, 7,782.24 and 2,112.32

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Solution

The fourth proportional to 5,188.16, 7,782.24 and 2,112.32 is: 3,168.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,188.16 : 7,782.24 = 2,112.32 : x
  2. Step 2: Convert to fraction form
    5,188.16/7,782.24 = 2,112.32/x
  3. Step 3: Cross multiply
    5,188.16x = 7,782.24 × 2,112.32
  4. Step 4: Simplify right side
    5,188.16x = 16,438,581.20
  5. Step 5: Solve for x
    x = 16,438,581.20/5,188.16
  6. Step 6: Final answer
    x = 3,168.48

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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.