Home / 5,378.28-7,416.86-3,489.17

Finding the Fourth Proportional to 5,378.28, 7,416.86 and 3,489.17

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Solution

The fourth proportional to 5,378.28, 7,416.86 and 3,489.17 is: 4,811.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,378.28 : 7,416.86 = 3,489.17 : x
  2. Step 2: Convert to fraction form
    5,378.28/7,416.86 = 3,489.17/x
  3. Step 3: Cross multiply
    5,378.28x = 7,416.86 × 3,489.17
  4. Step 4: Simplify right side
    5,378.28x = 25,878,630.88
  5. Step 5: Solve for x
    x = 25,878,630.88/5,378.28
  6. Step 6: Final answer
    x = 4,811.69

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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.