Home / 8,174.81-11,267.76-5,781.70

Finding the Fourth Proportional to 8,174.81, 11,267.76 and 5,781.70

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Solution

The fourth proportional to 8,174.81, 11,267.76 and 5,781.70 is: 7,969.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,174.81 : 11,267.76 = 5,781.70 : x
  2. Step 2: Convert to fraction form
    8,174.81/11,267.76 = 5,781.70/x
  3. Step 3: Cross multiply
    8,174.81x = 11,267.76 × 5,781.70
  4. Step 4: Simplify right side
    8,174.81x = 65,146,807.99
  5. Step 5: Solve for x
    x = 65,146,807.99/8,174.81
  6. Step 6: Final answer
    x = 7,969.21

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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.