Home / 4,119.13-6,178.03-1,345.78

Finding the Fourth Proportional to 4,119.13, 6,178.03 and 1,345.78

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Solution

The fourth proportional to 4,119.13, 6,178.03 and 1,345.78 is: 2,018.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,119.13 : 6,178.03 = 1,345.78 : x
  2. Step 2: Convert to fraction form
    4,119.13/6,178.03 = 1,345.78/x
  3. Step 3: Cross multiply
    4,119.13x = 6,178.03 × 1,345.78
  4. Step 4: Simplify right side
    4,119.13x = 8,314,238.32
  5. Step 5: Solve for x
    x = 8,314,238.32/4,119.13
  6. Step 6: Final answer
    x = 2,018.45

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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.