Home / 3,720.18-5,580.36-3,069.72

Finding the Fourth Proportional to 3,720.18, 5,580.36 and 3,069.72

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Solution

The fourth proportional to 3,720.18, 5,580.36 and 3,069.72 is: 4,604.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,720.18 : 5,580.36 = 3,069.72 : x
  2. Step 2: Convert to fraction form
    3,720.18/5,580.36 = 3,069.72/x
  3. Step 3: Cross multiply
    3,720.18x = 5,580.36 × 3,069.72
  4. Step 4: Simplify right side
    3,720.18x = 17,130,142.70
  5. Step 5: Solve for x
    x = 17,130,142.70/3,720.18
  6. Step 6: Final answer
    x = 4,604.65

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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.