Home / 9,411.92-12,988.44-5,220.08

Finding the Fourth Proportional to 9,411.92, 12,988.44 and 5,220.08

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Solution

The fourth proportional to 9,411.92, 12,988.44 and 5,220.08 is: 7,203.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,411.92 : 12,988.44 = 5,220.08 : x
  2. Step 2: Convert to fraction form
    9,411.92/12,988.44 = 5,220.08/x
  3. Step 3: Cross multiply
    9,411.92x = 12,988.44 × 5,220.08
  4. Step 4: Simplify right side
    9,411.92x = 67,800,695.88
  5. Step 5: Solve for x
    x = 67,800,695.88/9,411.92
  6. Step 6: Final answer
    x = 7,203.71

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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.