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Finding the Fourth Proportional to 3,488.45, 4,813.89 and 1,916.51

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Solution

The fourth proportional to 3,488.45, 4,813.89 and 1,916.51 is: 2,644.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.45 : 4,813.89 = 1,916.51 : x
  2. Step 2: Convert to fraction form
    3,488.45/4,813.89 = 1,916.51/x
  3. Step 3: Cross multiply
    3,488.45x = 4,813.89 × 1,916.51
  4. Step 4: Simplify right side
    3,488.45x = 9,225,844.25
  5. Step 5: Solve for x
    x = 9,225,844.25/3,488.45
  6. Step 6: Final answer
    x = 2,644.69

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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.