Home / 3,898.64-5,382.08-2,407.40

Finding the Fourth Proportional to 3,898.64, 5,382.08 and 2,407.40

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Solution

The fourth proportional to 3,898.64, 5,382.08 and 2,407.40 is: 3,323.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,898.64 : 5,382.08 = 2,407.40 : x
  2. Step 2: Convert to fraction form
    3,898.64/5,382.08 = 2,407.40/x
  3. Step 3: Cross multiply
    3,898.64x = 5,382.08 × 2,407.40
  4. Step 4: Simplify right side
    3,898.64x = 12,956,819.39
  5. Step 5: Solve for x
    x = 12,956,819.39/3,898.64
  6. Step 6: Final answer
    x = 3,323.42

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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.