Home / 3,415.96-5,117.46-1,685.80

Finding the Fourth Proportional to 3,415.96, 5,117.46 and 1,685.80

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Solution

The fourth proportional to 3,415.96, 5,117.46 and 1,685.80 is: 2,525.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,415.96 : 5,117.46 = 1,685.80 : x
  2. Step 2: Convert to fraction form
    3,415.96/5,117.46 = 1,685.80/x
  3. Step 3: Cross multiply
    3,415.96x = 5,117.46 × 1,685.80
  4. Step 4: Simplify right side
    3,415.96x = 8,627,014.07
  5. Step 5: Solve for x
    x = 8,627,014.07/3,415.96
  6. Step 6: Final answer
    x = 2,525.50

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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.