Home / 1,823.78-2,516.81-1,115.51

Finding the Fourth Proportional to 1,823.78, 2,516.81 and 1,115.51

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Solution

The fourth proportional to 1,823.78, 2,516.81 and 1,115.51 is: 1,539.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,823.78 : 2,516.81 = 1,115.51 : x
  2. Step 2: Convert to fraction form
    1,823.78/2,516.81 = 1,115.51/x
  3. Step 3: Cross multiply
    1,823.78x = 2,516.81 × 1,115.51
  4. Step 4: Simplify right side
    1,823.78x = 2,807,508.56
  5. Step 5: Solve for x
    x = 2,807,508.56/1,823.78
  6. Step 6: Final answer
    x = 1,539.39

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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.