Home / 2,447.07-3,376.80-1,438.62

Finding the Fourth Proportional to 2,447.07, 3,376.80 and 1,438.62

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Solution

The fourth proportional to 2,447.07, 3,376.80 and 1,438.62 is: 1,985.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.07 : 3,376.80 = 1,438.62 : x
  2. Step 2: Convert to fraction form
    2,447.07/3,376.80 = 1,438.62/x
  3. Step 3: Cross multiply
    2,447.07x = 3,376.80 × 1,438.62
  4. Step 4: Simplify right side
    2,447.07x = 4,857,932.02
  5. Step 5: Solve for x
    x = 4,857,932.02/2,447.07
  6. Step 6: Final answer
    x = 1,985.20

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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.