Home / 2,165.44-2,988.58-1,420.02

Finding the Fourth Proportional to 2,165.44, 2,988.58 and 1,420.02

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Solution

The fourth proportional to 2,165.44, 2,988.58 and 1,420.02 is: 1,959.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,165.44 : 2,988.58 = 1,420.02 : x
  2. Step 2: Convert to fraction form
    2,165.44/2,988.58 = 1,420.02/x
  3. Step 3: Cross multiply
    2,165.44x = 2,988.58 × 1,420.02
  4. Step 4: Simplify right side
    2,165.44x = 4,243,843.37
  5. Step 5: Solve for x
    x = 4,243,843.37/2,165.44
  6. Step 6: Final answer
    x = 1,959.81

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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.