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Finding the Fourth Proportional to 12,390.52, 17,100.02 and 6,802.60

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Solution

The fourth proportional to 12,390.52, 17,100.02 and 6,802.60 is: 9,388.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,390.52 : 17,100.02 = 6,802.60 : x
  2. Step 2: Convert to fraction form
    12,390.52/17,100.02 = 6,802.60/x
  3. Step 3: Cross multiply
    12,390.52x = 17,100.02 × 6,802.60
  4. Step 4: Simplify right side
    12,390.52x = 116,324,596.05
  5. Step 5: Solve for x
    x = 116,324,596.05/12,390.52
  6. Step 6: Final answer
    x = 9,388.19

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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.