Home / 6,515.82-9,786.80-3,888.45

Finding the Fourth Proportional to 6,515.82, 9,786.80 and 3,888.45

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Solution

The fourth proportional to 6,515.82, 9,786.80 and 3,888.45 is: 5,840.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,515.82 : 9,786.80 = 3,888.45 : x
  2. Step 2: Convert to fraction form
    6,515.82/9,786.80 = 3,888.45/x
  3. Step 3: Cross multiply
    6,515.82x = 9,786.80 × 3,888.45
  4. Step 4: Simplify right side
    6,515.82x = 38,055,482.46
  5. Step 5: Solve for x
    x = 38,055,482.46/6,515.82
  6. Step 6: Final answer
    x = 5,840.47

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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.