Home / 1,815.12-2,506.07-1,618.29

Finding the Fourth Proportional to 1,815.12, 2,506.07 and 1,618.29

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Solution

The fourth proportional to 1,815.12, 2,506.07 and 1,618.29 is: 2,234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.12 : 2,506.07 = 1,618.29 : x
  2. Step 2: Convert to fraction form
    1,815.12/2,506.07 = 1,618.29/x
  3. Step 3: Cross multiply
    1,815.12x = 2,506.07 × 1,618.29
  4. Step 4: Simplify right side
    1,815.12x = 4,055,548.02
  5. Step 5: Solve for x
    x = 4,055,548.02/1,815.12
  6. Step 6: Final answer
    x = 2,234.31

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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.