Home / 6,645.87-9,170.69-4,878.45

Finding the Fourth Proportional to 6,645.87, 9,170.69 and 4,878.45

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Solution

The fourth proportional to 6,645.87, 9,170.69 and 4,878.45 is: 6,731.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,645.87 : 9,170.69 = 4,878.45 : x
  2. Step 2: Convert to fraction form
    6,645.87/9,170.69 = 4,878.45/x
  3. Step 3: Cross multiply
    6,645.87x = 9,170.69 × 4,878.45
  4. Step 4: Simplify right side
    6,645.87x = 44,738,728.24
  5. Step 5: Solve for x
    x = 44,738,728.24/6,645.87
  6. Step 6: Final answer
    x = 6,731.81

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Double scale
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Similar ratio
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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.