Home / 4,378.72-6,568.56-1,781.68

Finding the Fourth Proportional to 4,378.72, 6,568.56 and 1,781.68

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Solution

The fourth proportional to 4,378.72, 6,568.56 and 1,781.68 is: 2,672.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,378.72 : 6,568.56 = 1,781.68 : x
  2. Step 2: Convert to fraction form
    4,378.72/6,568.56 = 1,781.68/x
  3. Step 3: Cross multiply
    4,378.72x = 6,568.56 × 1,781.68
  4. Step 4: Simplify right side
    4,378.72x = 11,703,071.98
  5. Step 5: Solve for x
    x = 11,703,071.98/4,378.72
  6. Step 6: Final answer
    x = 2,672.72

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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.