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Finding the Fourth Proportional to 2,663.79, 3,995.70 and 1,020.15

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Solution

The fourth proportional to 2,663.79, 3,995.70 and 1,020.15 is: 1,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,663.79 : 3,995.70 = 1,020.15 : x
  2. Step 2: Convert to fraction form
    2,663.79/3,995.70 = 1,020.15/x
  3. Step 3: Cross multiply
    2,663.79x = 3,995.70 × 1,020.15
  4. Step 4: Simplify right side
    2,663.79x = 4,076,213.36
  5. Step 5: Solve for x
    x = 4,076,213.36/2,663.79
  6. Step 6: Final answer
    x = 1,530.23

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1.5x scale

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.