Home / 8,478.24-12,715.88-2,238.30

Finding the Fourth Proportional to 8,478.24, 12,715.88 and 2,238.30

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Solution

The fourth proportional to 8,478.24, 12,715.88 and 2,238.30 is: 3,357.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,478.24 : 12,715.88 = 2,238.30 : x
  2. Step 2: Convert to fraction form
    8,478.24/12,715.88 = 2,238.30/x
  3. Step 3: Cross multiply
    8,478.24x = 12,715.88 × 2,238.30
  4. Step 4: Simplify right side
    8,478.24x = 28,461,943.01
  5. Step 5: Solve for x
    x = 28,461,943.01/8,478.24
  6. Step 6: Final answer
    x = 3,357.06

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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.