Home / 5,445.72-7,518.96-3,680.64

Finding the Fourth Proportional to 5,445.72, 7,518.96 and 3,680.64

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Solution

The fourth proportional to 5,445.72, 7,518.96 and 3,680.64 is: 5,081.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,445.72 : 7,518.96 = 3,680.64 : x
  2. Step 2: Convert to fraction form
    5,445.72/7,518.96 = 3,680.64/x
  3. Step 3: Cross multiply
    5,445.72x = 7,518.96 × 3,680.64
  4. Step 4: Simplify right side
    5,445.72x = 27,674,584.93
  5. Step 5: Solve for x
    x = 27,674,584.93/5,445.72
  6. Step 6: Final answer
    x = 5,081.90

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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.