Home / 6,919.72-10,378.45-1,988.24

Finding the Fourth Proportional to 6,919.72, 10,378.45 and 1,988.24

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Solution

The fourth proportional to 6,919.72, 10,378.45 and 1,988.24 is: 2,982.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,919.72 : 10,378.45 = 1,988.24 : x
  2. Step 2: Convert to fraction form
    6,919.72/10,378.45 = 1,988.24/x
  3. Step 3: Cross multiply
    6,919.72x = 10,378.45 × 1,988.24
  4. Step 4: Simplify right side
    6,919.72x = 20,634,849.43
  5. Step 5: Solve for x
    x = 20,634,849.43/6,919.72
  6. Step 6: Final answer
    x = 2,982.04

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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.