Home / 6,405.11-8,837.71-3,888.55

Finding the Fourth Proportional to 6,405.11, 8,837.71 and 3,888.55

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Solution

The fourth proportional to 6,405.11, 8,837.71 and 3,888.55 is: 5,365.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,405.11 : 8,837.71 = 3,888.55 : x
  2. Step 2: Convert to fraction form
    6,405.11/8,837.71 = 3,888.55/x
  3. Step 3: Cross multiply
    6,405.11x = 8,837.71 × 3,888.55
  4. Step 4: Simplify right side
    6,405.11x = 34,365,859.99
  5. Step 5: Solve for x
    x = 34,365,859.99/6,405.11
  6. Step 6: Final answer
    x = 5,365.38

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.