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Finding the Fourth Proportional to 8,520.51, 11,722.59 and 7,507.65

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Solution

The fourth proportional to 8,520.51, 11,722.59 and 7,507.65 is: 10,329.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,520.51 : 11,722.59 = 7,507.65 : x
  2. Step 2: Convert to fraction form
    8,520.51/11,722.59 = 7,507.65/x
  3. Step 3: Cross multiply
    8,520.51x = 11,722.59 × 7,507.65
  4. Step 4: Simplify right side
    8,520.51x = 88,009,102.81
  5. Step 5: Solve for x
    x = 88,009,102.81/8,520.51
  6. Step 6: Final answer
    x = 10,329.09

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Double scale
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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.