Home / 1,980.12-2,730.54-1,717.56

Finding the Fourth Proportional to 1,980.12, 2,730.54 and 1,717.56

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Solution

The fourth proportional to 1,980.12, 2,730.54 and 1,717.56 is: 2,368.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.12 : 2,730.54 = 1,717.56 : x
  2. Step 2: Convert to fraction form
    1,980.12/2,730.54 = 1,717.56/x
  3. Step 3: Cross multiply
    1,980.12x = 2,730.54 × 1,717.56
  4. Step 4: Simplify right side
    1,980.12x = 4,689,866.28
  5. Step 5: Solve for x
    x = 4,689,866.28/1,980.12
  6. Step 6: Final answer
    x = 2,368.48

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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.