Home / 7,509.13-11,261.56-3,121.16

Finding the Fourth Proportional to 7,509.13, 11,261.56 and 3,121.16

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Solution

The fourth proportional to 7,509.13, 11,261.56 and 3,121.16 is: 4,680.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,509.13 : 11,261.56 = 3,121.16 : x
  2. Step 2: Convert to fraction form
    7,509.13/11,261.56 = 3,121.16/x
  3. Step 3: Cross multiply
    7,509.13x = 11,261.56 × 3,121.16
  4. Step 4: Simplify right side
    7,509.13x = 35,149,130.61
  5. Step 5: Solve for x
    x = 35,149,130.61/7,509.13
  6. Step 6: Final answer
    x = 4,680.85

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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.