Home / 3,479.96-5,217.36-1,288.28

Finding the Fourth Proportional to 3,479.96, 5,217.36 and 1,288.28

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Solution

The fourth proportional to 3,479.96, 5,217.36 and 1,288.28 is: 1,931.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,479.96 : 5,217.36 = 1,288.28 : x
  2. Step 2: Convert to fraction form
    3,479.96/5,217.36 = 1,288.28/x
  3. Step 3: Cross multiply
    3,479.96x = 5,217.36 × 1,288.28
  4. Step 4: Simplify right side
    3,479.96x = 6,721,420.54
  5. Step 5: Solve for x
    x = 6,721,420.54/3,479.96
  6. Step 6: Final answer
    x = 1,931.46

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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.