Home / 1,815.11-2,719.23-1,072.50

Finding the Fourth Proportional to 1,815.11, 2,719.23 and 1,072.50

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Solution

The fourth proportional to 1,815.11, 2,719.23 and 1,072.50 is: 1,606.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,815.11 : 2,719.23 = 1,072.50 : x
  2. Step 2: Convert to fraction form
    1,815.11/2,719.23 = 1,072.50/x
  3. Step 3: Cross multiply
    1,815.11x = 2,719.23 × 1,072.50
  4. Step 4: Simplify right side
    1,815.11x = 2,916,381.60
  5. Step 5: Solve for x
    x = 2,916,381.60/1,815.11
  6. Step 6: Final answer
    x = 1,606.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.