Home / 3,127.80-4,316.08-1,801.60

Finding the Fourth Proportional to 3,127.80, 4,316.08 and 1,801.60

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Solution

The fourth proportional to 3,127.80, 4,316.08 and 1,801.60 is: 2,486.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,127.80 : 4,316.08 = 1,801.60 : x
  2. Step 2: Convert to fraction form
    3,127.80/4,316.08 = 1,801.60/x
  3. Step 3: Cross multiply
    3,127.80x = 4,316.08 × 1,801.60
  4. Step 4: Simplify right side
    3,127.80x = 7,775,849.73
  5. Step 5: Solve for x
    x = 7,775,849.73/3,127.80
  6. Step 6: Final answer
    x = 2,486.04

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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.