Home / 3,271.35-4,515.44-2,153.15

Finding the Fourth Proportional to 3,271.35, 4,515.44 and 2,153.15

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Solution

The fourth proportional to 3,271.35, 4,515.44 and 2,153.15 is: 2,971.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.35 : 4,515.44 = 2,153.15 : x
  2. Step 2: Convert to fraction form
    3,271.35/4,515.44 = 2,153.15/x
  3. Step 3: Cross multiply
    3,271.35x = 4,515.44 × 2,153.15
  4. Step 4: Simplify right side
    3,271.35x = 9,722,419.64
  5. Step 5: Solve for x
    x = 9,722,419.64/3,271.35
  6. Step 6: Final answer
    x = 2,971.99

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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.