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Finding the Fourth Proportional to 8,480.70, 11,706.12 and 5,491.26

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Solution

The fourth proportional to 8,480.70, 11,706.12 and 5,491.26 is: 7,579.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,480.70 : 11,706.12 = 5,491.26 : x
  2. Step 2: Convert to fraction form
    8,480.70/11,706.12 = 5,491.26/x
  3. Step 3: Cross multiply
    8,480.70x = 11,706.12 × 5,491.26
  4. Step 4: Simplify right side
    8,480.70x = 64,281,348.51
  5. Step 5: Solve for x
    x = 64,281,348.51/8,480.70
  6. Step 6: Final answer
    x = 7,579.72

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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.