Home / 7,215.08-10,806.21-5,645.30

Finding the Fourth Proportional to 7,215.08, 10,806.21 and 5,645.30

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Solution

The fourth proportional to 7,215.08, 10,806.21 and 5,645.30 is: 8,455.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.08 : 10,806.21 = 5,645.30 : x
  2. Step 2: Convert to fraction form
    7,215.08/10,806.21 = 5,645.30/x
  3. Step 3: Cross multiply
    7,215.08x = 10,806.21 × 5,645.30
  4. Step 4: Simplify right side
    7,215.08x = 61,004,243.28
  5. Step 5: Solve for x
    x = 61,004,243.28/7,215.08
  6. Step 6: Final answer
    x = 8,455.11

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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.