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Finding the Fourth Proportional to 7,750.62, 10,699.93 and 6,221.54

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Solution

The fourth proportional to 7,750.62, 10,699.93 and 6,221.54 is: 8,588.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.62 : 10,699.93 = 6,221.54 : x
  2. Step 2: Convert to fraction form
    7,750.62/10,699.93 = 6,221.54/x
  3. Step 3: Cross multiply
    7,750.62x = 10,699.93 × 6,221.54
  4. Step 4: Simplify right side
    7,750.62x = 66,569,988.99
  5. Step 5: Solve for x
    x = 66,569,988.99/7,750.62
  6. Step 6: Final answer
    x = 8,588.99

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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.