Home / 7,715.99-11,571.59-2,785.00

Finding the Fourth Proportional to 7,715.99, 11,571.59 and 2,785.00

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Solution

The fourth proportional to 7,715.99, 11,571.59 and 2,785.00 is: 4,176.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,715.99 : 11,571.59 = 2,785.00 : x
  2. Step 2: Convert to fraction form
    7,715.99/11,571.59 = 2,785.00/x
  3. Step 3: Cross multiply
    7,715.99x = 11,571.59 × 2,785.00
  4. Step 4: Simplify right side
    7,715.99x = 32,226,856.18
  5. Step 5: Solve for x
    x = 32,226,856.18/7,715.99
  6. Step 6: Final answer
    x = 4,176.64

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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.