Home / 2,107.20-3,154.73-1,864.20

Finding the Fourth Proportional to 2,107.20, 3,154.73 and 1,864.20

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Solution

The fourth proportional to 2,107.20, 3,154.73 and 1,864.20 is: 2,790.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,107.20 : 3,154.73 = 1,864.20 : x
  2. Step 2: Convert to fraction form
    2,107.20/3,154.73 = 1,864.20/x
  3. Step 3: Cross multiply
    2,107.20x = 3,154.73 × 1,864.20
  4. Step 4: Simplify right side
    2,107.20x = 5,881,038.35
  5. Step 5: Solve for x
    x = 5,881,038.35/2,107.20
  6. Step 6: Final answer
    x = 2,790.93

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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.