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Finding the Fourth Proportional to 7,666.58, 11,521.74 and 3,773.72

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Solution

The fourth proportional to 7,666.58, 11,521.74 and 3,773.72 is: 5,671.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.58 : 11,521.74 = 3,773.72 : x
  2. Step 2: Convert to fraction form
    7,666.58/11,521.74 = 3,773.72/x
  3. Step 3: Cross multiply
    7,666.58x = 11,521.74 × 3,773.72
  4. Step 4: Simplify right side
    7,666.58x = 43,479,820.67
  5. Step 5: Solve for x
    x = 43,479,820.67/7,666.58
  6. Step 6: Final answer
    x = 5,671.35

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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.