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Finding the Fourth Proportional to 6,642.63, 9,166.65 and 3,810.48

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Solution

The fourth proportional to 6,642.63, 9,166.65 and 3,810.48 is: 5,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,642.63 : 9,166.65 = 3,810.48 : x
  2. Step 2: Convert to fraction form
    6,642.63/9,166.65 = 3,810.48/x
  3. Step 3: Cross multiply
    6,642.63x = 9,166.65 × 3,810.48
  4. Step 4: Simplify right side
    6,642.63x = 34,929,336.49
  5. Step 5: Solve for x
    x = 34,929,336.49/6,642.63
  6. Step 6: Final answer
    x = 5,258.36

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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.