Home / 3,118.91-4,678.81-1,475.31

Finding the Fourth Proportional to 3,118.91, 4,678.81 and 1,475.31

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Solution

The fourth proportional to 3,118.91, 4,678.81 and 1,475.31 is: 2,213.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.91 : 4,678.81 = 1,475.31 : x
  2. Step 2: Convert to fraction form
    3,118.91/4,678.81 = 1,475.31/x
  3. Step 3: Cross multiply
    3,118.91x = 4,678.81 × 1,475.31
  4. Step 4: Simplify right side
    3,118.91x = 6,902,717.34
  5. Step 5: Solve for x
    x = 6,902,717.34/3,118.91
  6. Step 6: Final answer
    x = 2,213.19

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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.