Home / 3,128.50-4,317.41-1,886.58

Finding the Fourth Proportional to 3,128.50, 4,317.41 and 1,886.58

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Solution

The fourth proportional to 3,128.50, 4,317.41 and 1,886.58 is: 2,603.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.50 : 4,317.41 = 1,886.58 : x
  2. Step 2: Convert to fraction form
    3,128.50/4,317.41 = 1,886.58/x
  3. Step 3: Cross multiply
    3,128.50x = 4,317.41 × 1,886.58
  4. Step 4: Simplify right side
    3,128.50x = 8,145,139.36
  5. Step 5: Solve for x
    x = 8,145,139.36/3,128.50
  6. Step 6: Final answer
    x = 2,603.53

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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.