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Finding the Fourth Proportional to 5,393.79, 7,441.98 and 3,156.22

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Solution

The fourth proportional to 5,393.79, 7,441.98 and 3,156.22 is: 4,354.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,393.79 : 7,441.98 = 3,156.22 : x
  2. Step 2: Convert to fraction form
    5,393.79/7,441.98 = 3,156.22/x
  3. Step 3: Cross multiply
    5,393.79x = 7,441.98 × 3,156.22
  4. Step 4: Simplify right side
    5,393.79x = 23,488,526.12
  5. Step 5: Solve for x
    x = 23,488,526.12/5,393.79
  6. Step 6: Final answer
    x = 4,354.74

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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.