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Finding the Fourth Proportional to 5,347.84, 7,380.22 and 2,990.20

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Solution

The fourth proportional to 5,347.84, 7,380.22 and 2,990.20 is: 4,126.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.84 : 7,380.22 = 2,990.20 : x
  2. Step 2: Convert to fraction form
    5,347.84/7,380.22 = 2,990.20/x
  3. Step 3: Cross multiply
    5,347.84x = 7,380.22 × 2,990.20
  4. Step 4: Simplify right side
    5,347.84x = 22,068,333.84
  5. Step 5: Solve for x
    x = 22,068,333.84/5,347.84
  6. Step 6: Final answer
    x = 4,126.59

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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.