Home / 7,869.20-11,803.74-3,189.14

Finding the Fourth Proportional to 7,869.20, 11,803.74 and 3,189.14

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Solution

The fourth proportional to 7,869.20, 11,803.74 and 3,189.14 is: 4,783.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.20 : 11,803.74 = 3,189.14 : x
  2. Step 2: Convert to fraction form
    7,869.20/11,803.74 = 3,189.14/x
  3. Step 3: Cross multiply
    7,869.20x = 11,803.74 × 3,189.14
  4. Step 4: Simplify right side
    7,869.20x = 37,643,779.38
  5. Step 5: Solve for x
    x = 37,643,779.38/7,869.20
  6. Step 6: Final answer
    x = 4,783.69

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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.