Home / 3,411.47-4,707.79-1,919.39

Finding the Fourth Proportional to 3,411.47, 4,707.79 and 1,919.39

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Solution

The fourth proportional to 3,411.47, 4,707.79 and 1,919.39 is: 2,648.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411.47 : 4,707.79 = 1,919.39 : x
  2. Step 2: Convert to fraction form
    3,411.47/4,707.79 = 1,919.39/x
  3. Step 3: Cross multiply
    3,411.47x = 4,707.79 × 1,919.39
  4. Step 4: Simplify right side
    3,411.47x = 9,036,085.05
  5. Step 5: Solve for x
    x = 9,036,085.05/3,411.47
  6. Step 6: Final answer
    x = 2,648.74

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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.