Home / 5,456.48-8,178.10-3,888.05

Finding the Fourth Proportional to 5,456.48, 8,178.10 and 3,888.05

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Solution

The fourth proportional to 5,456.48, 8,178.10 and 3,888.05 is: 5,827.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,456.48 : 8,178.10 = 3,888.05 : x
  2. Step 2: Convert to fraction form
    5,456.48/8,178.10 = 3,888.05/x
  3. Step 3: Cross multiply
    5,456.48x = 8,178.10 × 3,888.05
  4. Step 4: Simplify right side
    5,456.48x = 31,796,811.09
  5. Step 5: Solve for x
    x = 31,796,811.09/5,456.48
  6. Step 6: Final answer
    x = 5,827.35

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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.