Home / 2,825.55-3,897.32-1,988.01

Finding the Fourth Proportional to 2,825.55, 3,897.32 and 1,988.01

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Solution

The fourth proportional to 2,825.55, 3,897.32 and 1,988.01 is: 2,742.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,825.55 : 3,897.32 = 1,988.01 : x
  2. Step 2: Convert to fraction form
    2,825.55/3,897.32 = 1,988.01/x
  3. Step 3: Cross multiply
    2,825.55x = 3,897.32 × 1,988.01
  4. Step 4: Simplify right side
    2,825.55x = 7,747,901.19
  5. Step 5: Solve for x
    x = 7,747,901.19/2,825.55
  6. Step 6: Final answer
    x = 2,742.09

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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.