Home / 1,838.60-2,537.20-999.28

Finding the Fourth Proportional to 1,838.60, 2,537.20 and 999.28

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Solution

The fourth proportional to 1,838.60, 2,537.20 and 999.28 is: 1,378.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,838.60 : 2,537.20 = 999.28 : x
  2. Step 2: Convert to fraction form
    1,838.60/2,537.20 = 999.28/x
  3. Step 3: Cross multiply
    1,838.60x = 2,537.20 × 999.28
  4. Step 4: Simplify right side
    1,838.60x = 2,535,364.37
  5. Step 5: Solve for x
    x = 2,535,364.37/1,838.60
  6. Step 6: Final answer
    x = 1,378.96

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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.