Home / 3,213.78-4,818.96-1,653.12

Finding the Fourth Proportional to 3,213.78, 4,818.96 and 1,653.12

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Solution

The fourth proportional to 3,213.78, 4,818.96 and 1,653.12 is: 2,478.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,213.78 : 4,818.96 = 1,653.12 : x
  2. Step 2: Convert to fraction form
    3,213.78/4,818.96 = 1,653.12/x
  3. Step 3: Cross multiply
    3,213.78x = 4,818.96 × 1,653.12
  4. Step 4: Simplify right side
    3,213.78x = 7,966,319.16
  5. Step 5: Solve for x
    x = 7,966,319.16/3,213.78
  6. Step 6: Final answer
    x = 2,478.80

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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.