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Finding the Fourth Proportional to 3,488.12, 4,813.44 and 1,916.25

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Solution

The fourth proportional to 3,488.12, 4,813.44 and 1,916.25 is: 2,644.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.12 : 4,813.44 = 1,916.25 : x
  2. Step 2: Convert to fraction form
    3,488.12/4,813.44 = 1,916.25/x
  3. Step 3: Cross multiply
    3,488.12x = 4,813.44 × 1,916.25
  4. Step 4: Simplify right side
    3,488.12x = 9,223,754.40
  5. Step 5: Solve for x
    x = 9,223,754.40/3,488.12
  6. Step 6: Final answer
    x = 2,644.34

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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.