Home / 1,857.62-2,783.36-1,125.68

Finding the Fourth Proportional to 1,857.62, 2,783.36 and 1,125.68

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Solution

The fourth proportional to 1,857.62, 2,783.36 and 1,125.68 is: 1,686.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.62 : 2,783.36 = 1,125.68 : x
  2. Step 2: Convert to fraction form
    1,857.62/2,783.36 = 1,125.68/x
  3. Step 3: Cross multiply
    1,857.62x = 2,783.36 × 1,125.68
  4. Step 4: Simplify right side
    1,857.62x = 3,133,161.58
  5. Step 5: Solve for x
    x = 3,133,161.58/1,857.62
  6. Step 6: Final answer
    x = 1,686.65

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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.