Home / 8,490.30-12,721.60-5,196.46

Finding the Fourth Proportional to 8,490.30, 12,721.60 and 5,196.46

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Solution

The fourth proportional to 8,490.30, 12,721.60 and 5,196.46 is: 7,786.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,490.30 : 12,721.60 = 5,196.46 : x
  2. Step 2: Convert to fraction form
    8,490.30/12,721.60 = 5,196.46/x
  3. Step 3: Cross multiply
    8,490.30x = 12,721.60 × 5,196.46
  4. Step 4: Simplify right side
    8,490.30x = 66,107,285.54
  5. Step 5: Solve for x
    x = 66,107,285.54/8,490.30
  6. Step 6: Final answer
    x = 7,786.21

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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.