Home / 3,927.12-5,890.68-1,330.08

Finding the Fourth Proportional to 3,927.12, 5,890.68 and 1,330.08

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Solution

The fourth proportional to 3,927.12, 5,890.68 and 1,330.08 is: 1,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,927.12 : 5,890.68 = 1,330.08 : x
  2. Step 2: Convert to fraction form
    3,927.12/5,890.68 = 1,330.08/x
  3. Step 3: Cross multiply
    3,927.12x = 5,890.68 × 1,330.08
  4. Step 4: Simplify right side
    3,927.12x = 7,835,075.65
  5. Step 5: Solve for x
    x = 7,835,075.65/3,927.12
  6. Step 6: Final answer
    x = 1,995.12

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Similar ratio
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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.