Home / 7,170.20-9,894.90-4,145.08

Finding the Fourth Proportional to 7,170.20, 9,894.90 and 4,145.08

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Solution

The fourth proportional to 7,170.20, 9,894.90 and 4,145.08 is: 5,720.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,170.20 : 9,894.90 = 4,145.08 : x
  2. Step 2: Convert to fraction form
    7,170.20/9,894.90 = 4,145.08/x
  3. Step 3: Cross multiply
    7,170.20x = 9,894.90 × 4,145.08
  4. Step 4: Simplify right side
    7,170.20x = 41,015,152.09
  5. Step 5: Solve for x
    x = 41,015,152.09/7,170.20
  6. Step 6: Final answer
    x = 5,720.22

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1.5x scale

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.