Home / 5,012.36-6,920.20-3,220.57

Finding the Fourth Proportional to 5,012.36, 6,920.20 and 3,220.57

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Solution

The fourth proportional to 5,012.36, 6,920.20 and 3,220.57 is: 4,446.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,012.36 : 6,920.20 = 3,220.57 : x
  2. Step 2: Convert to fraction form
    5,012.36/6,920.20 = 3,220.57/x
  3. Step 3: Cross multiply
    5,012.36x = 6,920.20 × 3,220.57
  4. Step 4: Simplify right side
    5,012.36x = 22,286,953.91
  5. Step 5: Solve for x
    x = 22,286,953.91/5,012.36
  6. Step 6: Final answer
    x = 4,446.40

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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.