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Finding the Fourth Proportional to 6,809.36, 9,393.53 and 5,911.88

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Solution

The fourth proportional to 6,809.36, 9,393.53 and 5,911.88 is: 8,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,809.36 : 9,393.53 = 5,911.88 : x
  2. Step 2: Convert to fraction form
    6,809.36/9,393.53 = 5,911.88/x
  3. Step 3: Cross multiply
    6,809.36x = 9,393.53 × 5,911.88
  4. Step 4: Simplify right side
    6,809.36x = 55,533,345.61
  5. Step 5: Solve for x
    x = 55,533,345.61/6,809.36
  6. Step 6: Final answer
    x = 8,155.45

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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.