Home / 1,981.48-2,734.74-1,153.48

Finding the Fourth Proportional to 1,981.48, 2,734.74 and 1,153.48

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Solution

The fourth proportional to 1,981.48, 2,734.74 and 1,153.48 is: 1,591.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,981.48 : 2,734.74 = 1,153.48 : x
  2. Step 2: Convert to fraction form
    1,981.48/2,734.74 = 1,153.48/x
  3. Step 3: Cross multiply
    1,981.48x = 2,734.74 × 1,153.48
  4. Step 4: Simplify right side
    1,981.48x = 3,154,467.90
  5. Step 5: Solve for x
    x = 3,154,467.90/1,981.48
  6. Step 6: Final answer
    x = 1,591.98

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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.