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Finding the Fourth Proportional to 2,566.80, 3,842.64 and 2,391.84

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Solution

The fourth proportional to 2,566.80, 3,842.64 and 2,391.84 is: 3,580.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,566.80 : 3,842.64 = 2,391.84 : x
  2. Step 2: Convert to fraction form
    2,566.80/3,842.64 = 2,391.84/x
  3. Step 3: Cross multiply
    2,566.80x = 3,842.64 × 2,391.84
  4. Step 4: Simplify right side
    2,566.80x = 9,190,980.06
  5. Step 5: Solve for x
    x = 9,190,980.06/2,566.80
  6. Step 6: Final answer
    x = 3,580.72

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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.