Home / 1,913.04-2,639.79-1,167.20

Finding the Fourth Proportional to 1,913.04, 2,639.79 and 1,167.20

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Solution

The fourth proportional to 1,913.04, 2,639.79 and 1,167.20 is: 1,610.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,913.04 : 2,639.79 = 1,167.20 : x
  2. Step 2: Convert to fraction form
    1,913.04/2,639.79 = 1,167.20/x
  3. Step 3: Cross multiply
    1,913.04x = 2,639.79 × 1,167.20
  4. Step 4: Simplify right side
    1,913.04x = 3,081,162.89
  5. Step 5: Solve for x
    x = 3,081,162.89/1,913.04
  6. Step 6: Final answer
    x = 1,610.61

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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.