Home / 7,122.66-10,690.88-3,427.44

Finding the Fourth Proportional to 7,122.66, 10,690.88 and 3,427.44

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Solution

The fourth proportional to 7,122.66, 10,690.88 and 3,427.44 is: 5,144.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.66 : 10,690.88 = 3,427.44 : x
  2. Step 2: Convert to fraction form
    7,122.66/10,690.88 = 3,427.44/x
  3. Step 3: Cross multiply
    7,122.66x = 10,690.88 × 3,427.44
  4. Step 4: Simplify right side
    7,122.66x = 36,642,332.61
  5. Step 5: Solve for x
    x = 36,642,332.61/7,122.66
  6. Step 6: Final answer
    x = 5,144.47

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1.5x scale

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.