Home / 5,451.19-8,178-1,988.44

Finding the Fourth Proportional to 5,451.19, 8,178 and 1,988.44

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Solution

The fourth proportional to 5,451.19, 8,178 and 1,988.44 is: 2,983.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.19 : 8,178 = 1,988.44 : x
  2. Step 2: Convert to fraction form
    5,451.19/8,178 = 1,988.44/x
  3. Step 3: Cross multiply
    5,451.19x = 8,178 × 1,988.44
  4. Step 4: Simplify right side
    5,451.19x = 16,261,462.32
  5. Step 5: Solve for x
    x = 16,261,462.32/5,451.19
  6. Step 6: Final answer
    x = 2,983.10

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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.