Home / 7,122.16-10,690.13-3,426.94

Finding the Fourth Proportional to 7,122.16, 10,690.13 and 3,426.94

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Solution

The fourth proportional to 7,122.16, 10,690.13 and 3,426.94 is: 5,143.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,122.16 : 10,690.13 = 3,426.94 : x
  2. Step 2: Convert to fraction form
    7,122.16/10,690.13 = 3,426.94/x
  3. Step 3: Cross multiply
    7,122.16x = 10,690.13 × 3,426.94
  4. Step 4: Simplify right side
    7,122.16x = 36,634,434.10
  5. Step 5: Solve for x
    x = 36,634,434.10/7,122.16
  6. Step 6: Final answer
    x = 5,143.73

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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.