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Finding the Fourth Proportional to 2,797.69, 4,193.92 and 947.51

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Solution

The fourth proportional to 2,797.69, 4,193.92 and 947.51 is: 1,420.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,797.69 : 4,193.92 = 947.51 : x
  2. Step 2: Convert to fraction form
    2,797.69/4,193.92 = 947.51/x
  3. Step 3: Cross multiply
    2,797.69x = 4,193.92 × 947.51
  4. Step 4: Simplify right side
    2,797.69x = 3,973,781.14
  5. Step 5: Solve for x
    x = 3,973,781.14/2,797.69
  6. Step 6: Final answer
    x = 1,420.38

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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.