Home / 4,815.29-6,644.31-2,690.45

Finding the Fourth Proportional to 4,815.29, 6,644.31 and 2,690.45

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Solution

The fourth proportional to 4,815.29, 6,644.31 and 2,690.45 is: 3,712.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,815.29 : 6,644.31 = 2,690.45 : x
  2. Step 2: Convert to fraction form
    4,815.29/6,644.31 = 2,690.45/x
  3. Step 3: Cross multiply
    4,815.29x = 6,644.31 × 2,690.45
  4. Step 4: Simplify right side
    4,815.29x = 17,876,200.45
  5. Step 5: Solve for x
    x = 17,876,200.45/4,815.29
  6. Step 6: Final answer
    x = 3,712.39

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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.