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Finding the Fourth Proportional to 1,964.83, 2,947.37 and 578.14

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Solution

The fourth proportional to 1,964.83, 2,947.37 and 578.14 is: 867.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,964.83 : 2,947.37 = 578.14 : x
  2. Step 2: Convert to fraction form
    1,964.83/2,947.37 = 578.14/x
  3. Step 3: Cross multiply
    1,964.83x = 2,947.37 × 578.14
  4. Step 4: Simplify right side
    1,964.83x = 1,703,992.49
  5. Step 5: Solve for x
    x = 1,703,992.49/1,964.83
  6. Step 6: Final answer
    x = 867.25

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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.