Home / 3,612.28-5,416.80-1,271.80

Finding the Fourth Proportional to 3,612.28, 5,416.80 and 1,271.80

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Solution

The fourth proportional to 3,612.28, 5,416.80 and 1,271.80 is: 1,907.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,612.28 : 5,416.80 = 1,271.80 : x
  2. Step 2: Convert to fraction form
    3,612.28/5,416.80 = 1,271.80/x
  3. Step 3: Cross multiply
    3,612.28x = 5,416.80 × 1,271.80
  4. Step 4: Simplify right side
    3,612.28x = 6,889,086.24
  5. Step 5: Solve for x
    x = 6,889,086.24/3,612.28
  6. Step 6: Final answer
    x = 1,907.13

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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.