Home / 8,125.21-11,205.75-5,291.50

Finding the Fourth Proportional to 8,125.21, 11,205.75 and 5,291.50

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Solution

The fourth proportional to 8,125.21, 11,205.75 and 5,291.50 is: 7,297.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,125.21 : 11,205.75 = 5,291.50 : x
  2. Step 2: Convert to fraction form
    8,125.21/11,205.75 = 5,291.50/x
  3. Step 3: Cross multiply
    8,125.21x = 11,205.75 × 5,291.50
  4. Step 4: Simplify right side
    8,125.21x = 59,295,226.13
  5. Step 5: Solve for x
    x = 59,295,226.13/8,125.21
  6. Step 6: Final answer
    x = 7,297.69

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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.