Home / 7,809.10-11,714.40-4,109.02

Finding the Fourth Proportional to 7,809.10, 11,714.40 and 4,109.02

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Solution

The fourth proportional to 7,809.10, 11,714.40 and 4,109.02 is: 6,163.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,809.10 : 11,714.40 = 4,109.02 : x
  2. Step 2: Convert to fraction form
    7,809.10/11,714.40 = 4,109.02/x
  3. Step 3: Cross multiply
    7,809.10x = 11,714.40 × 4,109.02
  4. Step 4: Simplify right side
    7,809.10x = 48,134,703.89
  5. Step 5: Solve for x
    x = 48,134,703.89/7,809.10
  6. Step 6: Final answer
    x = 6,163.92

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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.