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Finding the Fourth Proportional to 6,485.48, 8,950.76 and 3,690.44

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Solution

The fourth proportional to 6,485.48, 8,950.76 and 3,690.44 is: 5,093.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,485.48 : 8,950.76 = 3,690.44 : x
  2. Step 2: Convert to fraction form
    6,485.48/8,950.76 = 3,690.44/x
  3. Step 3: Cross multiply
    6,485.48x = 8,950.76 × 3,690.44
  4. Step 4: Simplify right side
    6,485.48x = 33,032,242.73
  5. Step 5: Solve for x
    x = 33,032,242.73/6,485.48
  6. Step 6: Final answer
    x = 5,093.26

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Find fourth proportional to 3,242.74, 4,475.38 and 1,845.22
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.