Home / 3,488.72-4,814.39-1,916.81

Finding the Fourth Proportional to 3,488.72, 4,814.39 and 1,916.81

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Solution

The fourth proportional to 3,488.72, 4,814.39 and 1,916.81 is: 2,645.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.72 : 4,814.39 = 1,916.81 : x
  2. Step 2: Convert to fraction form
    3,488.72/4,814.39 = 1,916.81/x
  3. Step 3: Cross multiply
    3,488.72x = 4,814.39 × 1,916.81
  4. Step 4: Simplify right side
    3,488.72x = 9,228,285.97
  5. Step 5: Solve for x
    x = 9,228,285.97/3,488.72
  6. Step 6: Final answer
    x = 2,645.18

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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.