Home / 3,271.50-4,518.38-2,221.74

Finding the Fourth Proportional to 3,271.50, 4,518.38 and 2,221.74

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Solution

The fourth proportional to 3,271.50, 4,518.38 and 2,221.74 is: 3,068.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,271.50 : 4,518.38 = 2,221.74 : x
  2. Step 2: Convert to fraction form
    3,271.50/4,518.38 = 2,221.74/x
  3. Step 3: Cross multiply
    3,271.50x = 4,518.38 × 2,221.74
  4. Step 4: Simplify right side
    3,271.50x = 10,038,665.58
  5. Step 5: Solve for x
    x = 10,038,665.58/3,271.50
  6. Step 6: Final answer
    x = 3,068.52

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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.