Home / 7,509.15-11,240.10-5,155.38

Finding the Fourth Proportional to 7,509.15, 11,240.10 and 5,155.38

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Solution

The fourth proportional to 7,509.15, 11,240.10 and 5,155.38 is: 7,716.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,509.15 : 11,240.10 = 5,155.38 : x
  2. Step 2: Convert to fraction form
    7,509.15/11,240.10 = 5,155.38/x
  3. Step 3: Cross multiply
    7,509.15x = 11,240.10 × 5,155.38
  4. Step 4: Simplify right side
    7,509.15x = 57,946,986.74
  5. Step 5: Solve for x
    x = 57,946,986.74/7,509.15
  6. Step 6: Final answer
    x = 7,716.85

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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.