Home / 7,828.64-11,740.05-3,147.08

Finding the Fourth Proportional to 7,828.64, 11,740.05 and 3,147.08

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Solution

The fourth proportional to 7,828.64, 11,740.05 and 3,147.08 is: 4,719.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.64 : 11,740.05 = 3,147.08 : x
  2. Step 2: Convert to fraction form
    7,828.64/11,740.05 = 3,147.08/x
  3. Step 3: Cross multiply
    7,828.64x = 11,740.05 × 3,147.08
  4. Step 4: Simplify right side
    7,828.64x = 36,946,809.00
  5. Step 5: Solve for x
    x = 36,946,809.00/7,828.64
  6. Step 6: Final answer
    x = 4,719.44

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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.