Home / 5,451.23-8,178.27-1,555.64

Finding the Fourth Proportional to 5,451.23, 8,178.27 and 1,555.64

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Solution

The fourth proportional to 5,451.23, 8,178.27 and 1,555.64 is: 2,333.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,451.23 : 8,178.27 = 1,555.64 : x
  2. Step 2: Convert to fraction form
    5,451.23/8,178.27 = 1,555.64/x
  3. Step 3: Cross multiply
    5,451.23x = 8,178.27 × 1,555.64
  4. Step 4: Simplify right side
    5,451.23x = 12,722,427.89
  5. Step 5: Solve for x
    x = 12,722,427.89/5,451.23
  6. Step 6: Final answer
    x = 2,333.86

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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.