Home / 5,913.05-8,160.08-3,920.04

Finding the Fourth Proportional to 5,913.05, 8,160.08 and 3,920.04

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Solution

The fourth proportional to 5,913.05, 8,160.08 and 3,920.04 is: 5,409.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,913.05 : 8,160.08 = 3,920.04 : x
  2. Step 2: Convert to fraction form
    5,913.05/8,160.08 = 3,920.04/x
  3. Step 3: Cross multiply
    5,913.05x = 8,160.08 × 3,920.04
  4. Step 4: Simplify right side
    5,913.05x = 31,987,820.40
  5. Step 5: Solve for x
    x = 31,987,820.40/5,913.05
  6. Step 6: Final answer
    x = 5,409.70

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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.