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Finding the Fourth Proportional to 7,145.11, 10,699.03 and 5,750.83

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Solution

The fourth proportional to 7,145.11, 10,699.03 and 5,750.83 is: 8,611.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.11 : 10,699.03 = 5,750.83 : x
  2. Step 2: Convert to fraction form
    7,145.11/10,699.03 = 5,750.83/x
  3. Step 3: Cross multiply
    7,145.11x = 10,699.03 × 5,750.83
  4. Step 4: Simplify right side
    7,145.11x = 61,528,302.69
  5. Step 5: Solve for x
    x = 61,528,302.69/7,145.11
  6. Step 6: Final answer
    x = 8,611.25

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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.