Home / 7,181.60-9,921.36-5,684.72

Finding the Fourth Proportional to 7,181.60, 9,921.36 and 5,684.72

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Solution

The fourth proportional to 7,181.60, 9,921.36 and 5,684.72 is: 7,853.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.60 : 9,921.36 = 5,684.72 : x
  2. Step 2: Convert to fraction form
    7,181.60/9,921.36 = 5,684.72/x
  3. Step 3: Cross multiply
    7,181.60x = 9,921.36 × 5,684.72
  4. Step 4: Simplify right side
    7,181.60x = 56,400,153.62
  5. Step 5: Solve for x
    x = 56,400,153.62/7,181.60
  6. Step 6: Final answer
    x = 7,853.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.