Home / 4,288.20-6,432.60-1,690.80

Finding the Fourth Proportional to 4,288.20, 6,432.60 and 1,690.80

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Solution

The fourth proportional to 4,288.20, 6,432.60 and 1,690.80 is: 2,536.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288.20 : 6,432.60 = 1,690.80 : x
  2. Step 2: Convert to fraction form
    4,288.20/6,432.60 = 1,690.80/x
  3. Step 3: Cross multiply
    4,288.20x = 6,432.60 × 1,690.80
  4. Step 4: Simplify right side
    4,288.20x = 10,876,240.08
  5. Step 5: Solve for x
    x = 10,876,240.08/4,288.20
  6. Step 6: Final answer
    x = 2,536.32

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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.