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Finding the Fourth Proportional to 1,951.49, 2,927.43 and 718.92

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Solution

The fourth proportional to 1,951.49, 2,927.43 and 718.92 is: 1,078.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.49 : 2,927.43 = 718.92 : x
  2. Step 2: Convert to fraction form
    1,951.49/2,927.43 = 718.92/x
  3. Step 3: Cross multiply
    1,951.49x = 2,927.43 × 718.92
  4. Step 4: Simplify right side
    1,951.49x = 2,104,587.98
  5. Step 5: Solve for x
    x = 2,104,587.98/1,951.49
  6. Step 6: Final answer
    x = 1,078.45

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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.