Home / 8,555.90-11,807.91-5,199.55

Finding the Fourth Proportional to 8,555.90, 11,807.91 and 5,199.55

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Solution

The fourth proportional to 8,555.90, 11,807.91 and 5,199.55 is: 7,175.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,555.90 : 11,807.91 = 5,199.55 : x
  2. Step 2: Convert to fraction form
    8,555.90/11,807.91 = 5,199.55/x
  3. Step 3: Cross multiply
    8,555.90x = 11,807.91 × 5,199.55
  4. Step 4: Simplify right side
    8,555.90x = 61,395,788.92
  5. Step 5: Solve for x
    x = 61,395,788.92/8,555.90
  6. Step 6: Final answer
    x = 7,175.85

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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.