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Finding the Fourth Proportional to 6,224.61, 8,590.93 and 3,991.82

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Solution

The fourth proportional to 6,224.61, 8,590.93 and 3,991.82 is: 5,509.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,224.61 : 8,590.93 = 3,991.82 : x
  2. Step 2: Convert to fraction form
    6,224.61/8,590.93 = 3,991.82/x
  3. Step 3: Cross multiply
    6,224.61x = 8,590.93 × 3,991.82
  4. Step 4: Simplify right side
    6,224.61x = 34,293,393.26
  5. Step 5: Solve for x
    x = 34,293,393.26/6,224.61
  6. Step 6: Final answer
    x = 5,509.32

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Half scale
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Double scale
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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.