Home / 1,980.89-2,731.81-1,701.03

Finding the Fourth Proportional to 1,980.89, 2,731.81 and 1,701.03

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Solution

The fourth proportional to 1,980.89, 2,731.81 and 1,701.03 is: 2,345.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.89 : 2,731.81 = 1,701.03 : x
  2. Step 2: Convert to fraction form
    1,980.89/2,731.81 = 1,701.03/x
  3. Step 3: Cross multiply
    1,980.89x = 2,731.81 × 1,701.03
  4. Step 4: Simplify right side
    1,980.89x = 4,646,890.76
  5. Step 5: Solve for x
    x = 4,646,890.76/1,980.89
  6. Step 6: Final answer
    x = 2,345.86

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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.