Home / 8,911.12-13,357.88-4,297.36

Finding the Fourth Proportional to 8,911.12, 13,357.88 and 4,297.36

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Solution

The fourth proportional to 8,911.12, 13,357.88 and 4,297.36 is: 6,441.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.12 : 13,357.88 = 4,297.36 : x
  2. Step 2: Convert to fraction form
    8,911.12/13,357.88 = 4,297.36/x
  3. Step 3: Cross multiply
    8,911.12x = 13,357.88 × 4,297.36
  4. Step 4: Simplify right side
    8,911.12x = 57,403,619.20
  5. Step 5: Solve for x
    x = 57,403,619.20/8,911.12
  6. Step 6: Final answer
    x = 6,441.80

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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.