Home / 8,911.14-13,369.86-3,980.34

Finding the Fourth Proportional to 8,911.14, 13,369.86 and 3,980.34

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Solution

The fourth proportional to 8,911.14, 13,369.86 and 3,980.34 is: 5,971.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,911.14 : 13,369.86 = 3,980.34 : x
  2. Step 2: Convert to fraction form
    8,911.14/13,369.86 = 3,980.34/x
  3. Step 3: Cross multiply
    8,911.14x = 13,369.86 × 3,980.34
  4. Step 4: Simplify right side
    8,911.14x = 53,216,588.55
  5. Step 5: Solve for x
    x = 53,216,588.55/8,911.14
  6. Step 6: Final answer
    x = 5,971.92

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1.5x scale

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.