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Finding the Fourth Proportional to 1,859.07, 2,789.03 and 626.45

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Solution

The fourth proportional to 1,859.07, 2,789.03 and 626.45 is: 939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.07 : 2,789.03 = 626.45 : x
  2. Step 2: Convert to fraction form
    1,859.07/2,789.03 = 626.45/x
  3. Step 3: Cross multiply
    1,859.07x = 2,789.03 × 626.45
  4. Step 4: Simplify right side
    1,859.07x = 1,747,187.84
  5. Step 5: Solve for x
    x = 1,747,187.84/1,859.07
  6. Step 6: Final answer
    x = 939.82

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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.