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Finding the Fourth Proportional to 5,979.22, 8,969.15 and 1,818.91

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Solution

The fourth proportional to 5,979.22, 8,969.15 and 1,818.91 is: 2,728.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,979.22 : 8,969.15 = 1,818.91 : x
  2. Step 2: Convert to fraction form
    5,979.22/8,969.15 = 1,818.91/x
  3. Step 3: Cross multiply
    5,979.22x = 8,969.15 × 1,818.91
  4. Step 4: Simplify right side
    5,979.22x = 16,314,045.11
  5. Step 5: Solve for x
    x = 16,314,045.11/5,979.22
  6. Step 6: Final answer
    x = 2,728.46

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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.