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Finding the Fourth Proportional to 6,518.71, 8,994.96 and 3,686.47

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Solution

The fourth proportional to 6,518.71, 8,994.96 and 3,686.47 is: 5,086.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,518.71 : 8,994.96 = 3,686.47 : x
  2. Step 2: Convert to fraction form
    6,518.71/8,994.96 = 3,686.47/x
  3. Step 3: Cross multiply
    6,518.71x = 8,994.96 × 3,686.47
  4. Step 4: Simplify right side
    6,518.71x = 33,159,650.19
  5. Step 5: Solve for x
    x = 33,159,650.19/6,518.71
  6. Step 6: Final answer
    x = 5,086.84

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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.