Home / 1,981.26-2,970.87-1,056.54

Finding the Fourth Proportional to 1,981.26, 2,970.87 and 1,056.54

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Solution

The fourth proportional to 1,981.26, 2,970.87 and 1,056.54 is: 1,584.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.26 : 2,970.87 = 1,056.54 : x
  2. Step 2: Convert to fraction form
    1,981.26/2,970.87 = 1,056.54/x
  3. Step 3: Cross multiply
    1,981.26x = 2,970.87 × 1,056.54
  4. Step 4: Simplify right side
    1,981.26x = 3,138,842.99
  5. Step 5: Solve for x
    x = 3,138,842.99/1,981.26
  6. Step 6: Final answer
    x = 1,584.27

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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.