Home / 4,253.76-6,381.36-1,620.72

Finding the Fourth Proportional to 4,253.76, 6,381.36 and 1,620.72

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Solution

The fourth proportional to 4,253.76, 6,381.36 and 1,620.72 is: 2,431.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,253.76 : 6,381.36 = 1,620.72 : x
  2. Step 2: Convert to fraction form
    4,253.76/6,381.36 = 1,620.72/x
  3. Step 3: Cross multiply
    4,253.76x = 6,381.36 × 1,620.72
  4. Step 4: Simplify right side
    4,253.76x = 10,342,397.78
  5. Step 5: Solve for x
    x = 10,342,397.78/4,253.76
  6. Step 6: Final answer
    x = 2,431.35

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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.