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Finding the Fourth Proportional to 6,144.39, 8,478.54 and 4,888.62

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Solution

The fourth proportional to 6,144.39, 8,478.54 and 4,888.62 is: 6,745.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,144.39 : 8,478.54 = 4,888.62 : x
  2. Step 2: Convert to fraction form
    6,144.39/8,478.54 = 4,888.62/x
  3. Step 3: Cross multiply
    6,144.39x = 8,478.54 × 4,888.62
  4. Step 4: Simplify right side
    6,144.39x = 41,448,360.21
  5. Step 5: Solve for x
    x = 41,448,360.21/6,144.39
  6. Step 6: Final answer
    x = 6,745.72

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Half scale
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Double scale
Find fourth proportional to 6,145.39, 8,479.92 and 4,889.62
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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.