Home / 4,317.71-6,478.38-2,128.88

Finding the Fourth Proportional to 4,317.71, 6,478.38 and 2,128.88

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Solution

The fourth proportional to 4,317.71, 6,478.38 and 2,128.88 is: 3,194.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,317.71 : 6,478.38 = 2,128.88 : x
  2. Step 2: Convert to fraction form
    4,317.71/6,478.38 = 2,128.88/x
  3. Step 3: Cross multiply
    4,317.71x = 6,478.38 × 2,128.88
  4. Step 4: Simplify right side
    4,317.71x = 13,791,709.81
  5. Step 5: Solve for x
    x = 13,791,709.81/4,317.71
  6. Step 6: Final answer
    x = 3,194.22

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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.