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Finding the Fourth Proportional to 5,343.84, 7,374.65 and 2,986.13

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Solution

The fourth proportional to 5,343.84, 7,374.65 and 2,986.13 is: 4,120.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,343.84 : 7,374.65 = 2,986.13 : x
  2. Step 2: Convert to fraction form
    5,343.84/7,374.65 = 2,986.13/x
  3. Step 3: Cross multiply
    5,343.84x = 7,374.65 × 2,986.13
  4. Step 4: Simplify right side
    5,343.84x = 22,021,667.11
  5. Step 5: Solve for x
    x = 22,021,667.11/5,343.84
  6. Step 6: Final answer
    x = 4,120.94

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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.