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Finding the Fourth Proportional to 2,730.99, 4,096.48 and 783.19

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Solution

The fourth proportional to 2,730.99, 4,096.48 and 783.19 is: 1,174.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.99 : 4,096.48 = 783.19 : x
  2. Step 2: Convert to fraction form
    2,730.99/4,096.48 = 783.19/x
  3. Step 3: Cross multiply
    2,730.99x = 4,096.48 × 783.19
  4. Step 4: Simplify right side
    2,730.99x = 3,208,322.17
  5. Step 5: Solve for x
    x = 3,208,322.17/2,730.99
  6. Step 6: Final answer
    x = 1,174.78

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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.