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Finding the Fourth Proportional to 6,600.80, 9,107.16 and 5,920.40

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Solution

The fourth proportional to 6,600.80, 9,107.16 and 5,920.40 is: 8,168.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600.80 : 9,107.16 = 5,920.40 : x
  2. Step 2: Convert to fraction form
    6,600.80/9,107.16 = 5,920.40/x
  3. Step 3: Cross multiply
    6,600.80x = 9,107.16 × 5,920.40
  4. Step 4: Simplify right side
    6,600.80x = 53,918,030.06
  5. Step 5: Solve for x
    x = 53,918,030.06/6,600.80
  6. Step 6: Final answer
    x = 8,168.41

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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.