Home / 9,220.90-12,725.91-5,242.61

Finding the Fourth Proportional to 9,220.90, 12,725.91 and 5,242.61

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Solution

The fourth proportional to 9,220.90, 12,725.91 and 5,242.61 is: 7,235.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,220.90 : 12,725.91 = 5,242.61 : x
  2. Step 2: Convert to fraction form
    9,220.90/12,725.91 = 5,242.61/x
  3. Step 3: Cross multiply
    9,220.90x = 12,725.91 × 5,242.61
  4. Step 4: Simplify right side
    9,220.90x = 66,716,919.40
  5. Step 5: Solve for x
    x = 66,716,919.40/9,220.90
  6. Step 6: Final answer
    x = 7,235.41

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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.