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Finding the Fourth Proportional to 6,513.93, 8,979.93 and 5,380.47

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Solution

The fourth proportional to 6,513.93, 8,979.93 and 5,380.47 is: 7,417.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,513.93 : 8,979.93 = 5,380.47 : x
  2. Step 2: Convert to fraction form
    6,513.93/8,979.93 = 5,380.47/x
  3. Step 3: Cross multiply
    6,513.93x = 8,979.93 × 5,380.47
  4. Step 4: Simplify right side
    6,513.93x = 48,316,243.97
  5. Step 5: Solve for x
    x = 48,316,243.97/6,513.93
  6. Step 6: Final answer
    x = 7,417.37

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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.