Home / 2,775.50-4,163.28-1,388.51

Finding the Fourth Proportional to 2,775.50, 4,163.28 and 1,388.51

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Solution

The fourth proportional to 2,775.50, 4,163.28 and 1,388.51 is: 2,082.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,775.50 : 4,163.28 = 1,388.51 : x
  2. Step 2: Convert to fraction form
    2,775.50/4,163.28 = 1,388.51/x
  3. Step 3: Cross multiply
    2,775.50x = 4,163.28 × 1,388.51
  4. Step 4: Simplify right side
    2,775.50x = 5,780,728.15
  5. Step 5: Solve for x
    x = 5,780,728.15/2,775.50
  6. Step 6: Final answer
    x = 2,082.77

Related Problems

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Half scale
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Double scale
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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.