Home / 6,688.87-9,230.55-3,856.25

Finding the Fourth Proportional to 6,688.87, 9,230.55 and 3,856.25

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Solution

The fourth proportional to 6,688.87, 9,230.55 and 3,856.25 is: 5,321.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,688.87 : 9,230.55 = 3,856.25 : x
  2. Step 2: Convert to fraction form
    6,688.87/9,230.55 = 3,856.25/x
  3. Step 3: Cross multiply
    6,688.87x = 9,230.55 × 3,856.25
  4. Step 4: Simplify right side
    6,688.87x = 35,595,331.51
  5. Step 5: Solve for x
    x = 35,595,331.51/6,688.87
  6. Step 6: Final answer
    x = 5,321.57

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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.