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Finding the Fourth Proportional to 1,798.42, 2,481.87 and 1,012.45

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Solution

The fourth proportional to 1,798.42, 2,481.87 and 1,012.45 is: 1,397.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,798.42 : 2,481.87 = 1,012.45 : x
  2. Step 2: Convert to fraction form
    1,798.42/2,481.87 = 1,012.45/x
  3. Step 3: Cross multiply
    1,798.42x = 2,481.87 × 1,012.45
  4. Step 4: Simplify right side
    1,798.42x = 2,512,769.28
  5. Step 5: Solve for x
    x = 2,512,769.28/1,798.42
  6. Step 6: Final answer
    x = 1,397.21

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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.