Home / 3,127.89-4,316.49-1,801.60

Finding the Fourth Proportional to 3,127.89, 4,316.49 and 1,801.60

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Solution

The fourth proportional to 3,127.89, 4,316.49 and 1,801.60 is: 2,486.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.89 : 4,316.49 = 1,801.60 : x
  2. Step 2: Convert to fraction form
    3,127.89/4,316.49 = 1,801.60/x
  3. Step 3: Cross multiply
    3,127.89x = 4,316.49 × 1,801.60
  4. Step 4: Simplify right side
    3,127.89x = 7,776,600.54
  5. Step 5: Solve for x
    x = 7,776,600.54/3,127.89
  6. Step 6: Final answer
    x = 2,486.21

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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.