Home / 1,980.96-2,735.04-1,857.06

Finding the Fourth Proportional to 1,980.96, 2,735.04 and 1,857.06

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Solution

The fourth proportional to 1,980.96, 2,735.04 and 1,857.06 is: 2,563.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,980.96 : 2,735.04 = 1,857.06 : x
  2. Step 2: Convert to fraction form
    1,980.96/2,735.04 = 1,857.06/x
  3. Step 3: Cross multiply
    1,980.96x = 2,735.04 × 1,857.06
  4. Step 4: Simplify right side
    1,980.96x = 5,079,133.38
  5. Step 5: Solve for x
    x = 5,079,133.38/1,980.96
  6. Step 6: Final answer
    x = 2,563.98

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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.