Home / 6,879.28-9,487.56-4,640.80

Finding the Fourth Proportional to 6,879.28, 9,487.56 and 4,640.80

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Solution

The fourth proportional to 6,879.28, 9,487.56 and 4,640.80 is: 6,400.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,879.28 : 9,487.56 = 4,640.80 : x
  2. Step 2: Convert to fraction form
    6,879.28/9,487.56 = 4,640.80/x
  3. Step 3: Cross multiply
    6,879.28x = 9,487.56 × 4,640.80
  4. Step 4: Simplify right side
    6,879.28x = 44,029,868.45
  5. Step 5: Solve for x
    x = 44,029,868.45/6,879.28
  6. Step 6: Final answer
    x = 6,400.36

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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.