Home / 8,579.98-11,836.90-5,220.10

Finding the Fourth Proportional to 8,579.98, 11,836.90 and 5,220.10

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Solution

The fourth proportional to 8,579.98, 11,836.90 and 5,220.10 is: 7,201.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,579.98 : 11,836.90 = 5,220.10 : x
  2. Step 2: Convert to fraction form
    8,579.98/11,836.90 = 5,220.10/x
  3. Step 3: Cross multiply
    8,579.98x = 11,836.90 × 5,220.10
  4. Step 4: Simplify right side
    8,579.98x = 61,789,801.69
  5. Step 5: Solve for x
    x = 61,789,801.69/8,579.98
  6. Step 6: Final answer
    x = 7,201.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.