Home / 3,213.19-4,432.89-1,953.64

Finding the Fourth Proportional to 3,213.19, 4,432.89 and 1,953.64

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Solution

The fourth proportional to 3,213.19, 4,432.89 and 1,953.64 is: 2,695.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.19 : 4,432.89 = 1,953.64 : x
  2. Step 2: Convert to fraction form
    3,213.19/4,432.89 = 1,953.64/x
  3. Step 3: Cross multiply
    3,213.19x = 4,432.89 × 1,953.64
  4. Step 4: Simplify right side
    3,213.19x = 8,660,271.22
  5. Step 5: Solve for x
    x = 8,660,271.22/3,213.19
  6. Step 6: Final answer
    x = 2,695.23

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Double scale
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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.