Home / 2,079.50-3,117.60-983.60

Finding the Fourth Proportional to 2,079.50, 3,117.60 and 983.60

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Solution

The fourth proportional to 2,079.50, 3,117.60 and 983.60 is: 1,474.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,079.50 : 3,117.60 = 983.60 : x
  2. Step 2: Convert to fraction form
    2,079.50/3,117.60 = 983.60/x
  3. Step 3: Cross multiply
    2,079.50x = 3,117.60 × 983.60
  4. Step 4: Simplify right side
    2,079.50x = 3,066,471.36
  5. Step 5: Solve for x
    x = 3,066,471.36/2,079.50
  6. Step 6: Final answer
    x = 1,474.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.