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Finding the Fourth Proportional to 1,275.03, 1,912.41 and 581.49

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Solution

The fourth proportional to 1,275.03, 1,912.41 and 581.49 is: 872.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,275.03 : 1,912.41 = 581.49 : x
  2. Step 2: Convert to fraction form
    1,275.03/1,912.41 = 581.49/x
  3. Step 3: Cross multiply
    1,275.03x = 1,912.41 × 581.49
  4. Step 4: Simplify right side
    1,275.03x = 1,112,047.29
  5. Step 5: Solve for x
    x = 1,112,047.29/1,275.03
  6. Step 6: Final answer
    x = 872.17

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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.