Home / 5,378.91-7,422.85-2,956.30

Finding the Fourth Proportional to 5,378.91, 7,422.85 and 2,956.30

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Solution

The fourth proportional to 5,378.91, 7,422.85 and 2,956.30 is: 4,079.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.91 : 7,422.85 = 2,956.30 : x
  2. Step 2: Convert to fraction form
    5,378.91/7,422.85 = 2,956.30/x
  3. Step 3: Cross multiply
    5,378.91x = 7,422.85 × 2,956.30
  4. Step 4: Simplify right side
    5,378.91x = 21,944,164.06
  5. Step 5: Solve for x
    x = 21,944,164.06/5,378.91
  6. Step 6: Final answer
    x = 4,079.67

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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.