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Finding the Fourth Proportional to 3,615.84, 4,991.30 and 2,357.96

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Solution

The fourth proportional to 3,615.84, 4,991.30 and 2,357.96 is: 3,254.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,615.84 : 4,991.30 = 2,357.96 : x
  2. Step 2: Convert to fraction form
    3,615.84/4,991.30 = 2,357.96/x
  3. Step 3: Cross multiply
    3,615.84x = 4,991.30 × 2,357.96
  4. Step 4: Simplify right side
    3,615.84x = 11,769,279.29
  5. Step 5: Solve for x
    x = 11,769,279.29/3,615.84
  6. Step 6: Final answer
    x = 3,254.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.