Home / 5,479.68-7,556.40-3,984.96

Finding the Fourth Proportional to 5,479.68, 7,556.40 and 3,984.96

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Solution

The fourth proportional to 5,479.68, 7,556.40 and 3,984.96 is: 5,495.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,479.68 : 7,556.40 = 3,984.96 : x
  2. Step 2: Convert to fraction form
    5,479.68/7,556.40 = 3,984.96/x
  3. Step 3: Cross multiply
    5,479.68x = 7,556.40 × 3,984.96
  4. Step 4: Simplify right side
    5,479.68x = 30,111,951.74
  5. Step 5: Solve for x
    x = 30,111,951.74/5,479.68
  6. Step 6: Final answer
    x = 5,495.20

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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.