Home / 3,128.41-4,316.72-1,801.85

Finding the Fourth Proportional to 3,128.41, 4,316.72 and 1,801.85

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Solution

The fourth proportional to 3,128.41, 4,316.72 and 1,801.85 is: 2,486.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.41 : 4,316.72 = 1,801.85 : x
  2. Step 2: Convert to fraction form
    3,128.41/4,316.72 = 1,801.85/x
  3. Step 3: Cross multiply
    3,128.41x = 4,316.72 × 1,801.85
  4. Step 4: Simplify right side
    3,128.41x = 7,778,097.23
  5. Step 5: Solve for x
    x = 7,778,097.23/3,128.41
  6. Step 6: Final answer
    x = 2,486.28

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1.5x scale

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.