Home / 8,631.21-11,911.51-4,855.57

Finding the Fourth Proportional to 8,631.21, 11,911.51 and 4,855.57

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Solution

The fourth proportional to 8,631.21, 11,911.51 and 4,855.57 is: 6,700.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,631.21 : 11,911.51 = 4,855.57 : x
  2. Step 2: Convert to fraction form
    8,631.21/11,911.51 = 4,855.57/x
  3. Step 3: Cross multiply
    8,631.21x = 11,911.51 × 4,855.57
  4. Step 4: Simplify right side
    8,631.21x = 57,837,119.59
  5. Step 5: Solve for x
    x = 57,837,119.59/8,631.21
  6. Step 6: Final answer
    x = 6,700.93

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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.