Home / 5,379.32-7,406.52-4,887.20

Finding the Fourth Proportional to 5,379.32, 7,406.52 and 4,887.20

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Solution

The fourth proportional to 5,379.32, 7,406.52 and 4,887.20 is: 6,728.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,379.32 : 7,406.52 = 4,887.20 : x
  2. Step 2: Convert to fraction form
    5,379.32/7,406.52 = 4,887.20/x
  3. Step 3: Cross multiply
    5,379.32x = 7,406.52 × 4,887.20
  4. Step 4: Simplify right side
    5,379.32x = 36,197,144.54
  5. Step 5: Solve for x
    x = 36,197,144.54/5,379.32
  6. Step 6: Final answer
    x = 6,728.94

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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.