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Finding the Fourth Proportional to 3,720.15, 5,579.04 and 1,347.93

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Solution

The fourth proportional to 3,720.15, 5,579.04 and 1,347.93 is: 2,021.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.15 : 5,579.04 = 1,347.93 : x
  2. Step 2: Convert to fraction form
    3,720.15/5,579.04 = 1,347.93/x
  3. Step 3: Cross multiply
    3,720.15x = 5,579.04 × 1,347.93
  4. Step 4: Simplify right side
    3,720.15x = 7,520,155.39
  5. Step 5: Solve for x
    x = 7,520,155.39/3,720.15
  6. Step 6: Final answer
    x = 2,021.47

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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.