Home / 3,410.78-5,115.07-1,330.28

Finding the Fourth Proportional to 3,410.78, 5,115.07 and 1,330.28

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Solution

The fourth proportional to 3,410.78, 5,115.07 and 1,330.28 is: 1,994.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,410.78 : 5,115.07 = 1,330.28 : x
  2. Step 2: Convert to fraction form
    3,410.78/5,115.07 = 1,330.28/x
  3. Step 3: Cross multiply
    3,410.78x = 5,115.07 × 1,330.28
  4. Step 4: Simplify right side
    3,410.78x = 6,804,446.42
  5. Step 5: Solve for x
    x = 6,804,446.42/3,410.78
  6. Step 6: Final answer
    x = 1,994.98

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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.