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Finding the Fourth Proportional to 5,689.86, 8,538.66 and 1,992.06

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Solution

The fourth proportional to 5,689.86, 8,538.66 and 1,992.06 is: 2,989.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,689.86 : 8,538.66 = 1,992.06 : x
  2. Step 2: Convert to fraction form
    5,689.86/8,538.66 = 1,992.06/x
  3. Step 3: Cross multiply
    5,689.86x = 8,538.66 × 1,992.06
  4. Step 4: Simplify right side
    5,689.86x = 17,009,523.04
  5. Step 5: Solve for x
    x = 17,009,523.04/5,689.86
  6. Step 6: Final answer
    x = 2,989.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.