Home / 3,916.73-5,405.10-2,148.35

Finding the Fourth Proportional to 3,916.73, 5,405.10 and 2,148.35

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Solution

The fourth proportional to 3,916.73, 5,405.10 and 2,148.35 is: 2,964.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,916.73 : 5,405.10 = 2,148.35 : x
  2. Step 2: Convert to fraction form
    3,916.73/5,405.10 = 2,148.35/x
  3. Step 3: Cross multiply
    3,916.73x = 5,405.10 × 2,148.35
  4. Step 4: Simplify right side
    3,916.73x = 11,612,019.56
  5. Step 5: Solve for x
    x = 11,612,019.56/3,916.73
  6. Step 6: Final answer
    x = 2,964.72

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1.5x scale

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.