Home / 1,555.86-2,147.53-1,025.13

Finding the Fourth Proportional to 1,555.86, 2,147.53 and 1,025.13

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Solution

The fourth proportional to 1,555.86, 2,147.53 and 1,025.13 is: 1,414.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,555.86 : 2,147.53 = 1,025.13 : x
  2. Step 2: Convert to fraction form
    1,555.86/2,147.53 = 1,025.13/x
  3. Step 3: Cross multiply
    1,555.86x = 2,147.53 × 1,025.13
  4. Step 4: Simplify right side
    1,555.86x = 2,201,497.43
  5. Step 5: Solve for x
    x = 2,201,497.43/1,555.86
  6. Step 6: Final answer
    x = 1,414.97

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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.