Home / 7,620.91-11,432.78-3,461.21

Finding the Fourth Proportional to 7,620.91, 11,432.78 and 3,461.21

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Solution

The fourth proportional to 7,620.91, 11,432.78 and 3,461.21 is: 5,192.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,620.91 : 11,432.78 = 3,461.21 : x
  2. Step 2: Convert to fraction form
    7,620.91/11,432.78 = 3,461.21/x
  3. Step 3: Cross multiply
    7,620.91x = 11,432.78 × 3,461.21
  4. Step 4: Simplify right side
    7,620.91x = 39,571,203.95
  5. Step 5: Solve for x
    x = 39,571,203.95/7,620.91
  6. Step 6: Final answer
    x = 5,192.45

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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.