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Finding the Fourth Proportional to 7,710.66, 11,565.89 and 1,867.22

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Solution

The fourth proportional to 7,710.66, 11,565.89 and 1,867.22 is: 2,800.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,710.66 : 11,565.89 = 1,867.22 : x
  2. Step 2: Convert to fraction form
    7,710.66/11,565.89 = 1,867.22/x
  3. Step 3: Cross multiply
    7,710.66x = 11,565.89 × 1,867.22
  4. Step 4: Simplify right side
    7,710.66x = 21,596,044.33
  5. Step 5: Solve for x
    x = 21,596,044.33/7,710.66
  6. Step 6: Final answer
    x = 2,800.80

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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.