Home / 7,578.21-11,358.09-3,417.12

Finding the Fourth Proportional to 7,578.21, 11,358.09 and 3,417.12

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Solution

The fourth proportional to 7,578.21, 11,358.09 and 3,417.12 is: 5,121.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,578.21 : 11,358.09 = 3,417.12 : x
  2. Step 2: Convert to fraction form
    7,578.21/11,358.09 = 3,417.12/x
  3. Step 3: Cross multiply
    7,578.21x = 11,358.09 × 3,417.12
  4. Step 4: Simplify right side
    7,578.21x = 38,811,956.50
  5. Step 5: Solve for x
    x = 38,811,956.50/7,578.21
  6. Step 6: Final answer
    x = 5,121.52

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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.