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Finding the Fourth Proportional to 6,781.08, 9,359.70 and 6,368.04

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Solution

The fourth proportional to 6,781.08, 9,359.70 and 6,368.04 is: 8,789.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,781.08 : 9,359.70 = 6,368.04 : x
  2. Step 2: Convert to fraction form
    6,781.08/9,359.70 = 6,368.04/x
  3. Step 3: Cross multiply
    6,781.08x = 9,359.70 × 6,368.04
  4. Step 4: Simplify right side
    6,781.08x = 59,602,943.99
  5. Step 5: Solve for x
    x = 59,602,943.99/6,781.08
  6. Step 6: Final answer
    x = 8,789.59

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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.