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Finding the Fourth Proportional to 7,750.55, 11,611.25 and 7,664.29

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Solution

The fourth proportional to 7,750.55, 11,611.25 and 7,664.29 is: 11,482.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,750.55 : 11,611.25 = 7,664.29 : x
  2. Step 2: Convert to fraction form
    7,750.55/11,611.25 = 7,664.29/x
  3. Step 3: Cross multiply
    7,750.55x = 11,611.25 × 7,664.29
  4. Step 4: Simplify right side
    7,750.55x = 88,991,948.65
  5. Step 5: Solve for x
    x = 88,991,948.65/7,750.55
  6. Step 6: Final answer
    x = 11,482.01

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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.