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Finding the Fourth Proportional to 7,512.60, 11,240.10 and 4,920.60

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Solution

The fourth proportional to 7,512.60, 11,240.10 and 4,920.60 is: 7,362.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,512.60 : 11,240.10 = 4,920.60 : x
  2. Step 2: Convert to fraction form
    7,512.60/11,240.10 = 4,920.60/x
  3. Step 3: Cross multiply
    7,512.60x = 11,240.10 × 4,920.60
  4. Step 4: Simplify right side
    7,512.60x = 55,308,036.06
  5. Step 5: Solve for x
    x = 55,308,036.06/7,512.60
  6. Step 6: Final answer
    x = 7,362.04

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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.