Home / 1,904.60-2,628.38-1,118.66

Finding the Fourth Proportional to 1,904.60, 2,628.38 and 1,118.66

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Solution

The fourth proportional to 1,904.60, 2,628.38 and 1,118.66 is: 1,543.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,904.60 : 2,628.38 = 1,118.66 : x
  2. Step 2: Convert to fraction form
    1,904.60/2,628.38 = 1,118.66/x
  3. Step 3: Cross multiply
    1,904.60x = 2,628.38 × 1,118.66
  4. Step 4: Simplify right side
    1,904.60x = 2,940,263.57
  5. Step 5: Solve for x
    x = 2,940,263.57/1,904.60
  6. Step 6: Final answer
    x = 1,543.77

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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.