Home / 7,857.72-11,781.60-3,695.04

Finding the Fourth Proportional to 7,857.72, 11,781.60 and 3,695.04

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Solution

The fourth proportional to 7,857.72, 11,781.60 and 3,695.04 is: 5,540.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,857.72 : 11,781.60 = 3,695.04 : x
  2. Step 2: Convert to fraction form
    7,857.72/11,781.60 = 3,695.04/x
  3. Step 3: Cross multiply
    7,857.72x = 11,781.60 × 3,695.04
  4. Step 4: Simplify right side
    7,857.72x = 43,533,483.26
  5. Step 5: Solve for x
    x = 43,533,483.26/7,857.72
  6. Step 6: Final answer
    x = 5,540.22

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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.