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Finding the Fourth Proportional to 1,859.32, 2,789.41 and 626.70

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Solution

The fourth proportional to 1,859.32, 2,789.41 and 626.70 is: 940.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.32 : 2,789.41 = 626.70 : x
  2. Step 2: Convert to fraction form
    1,859.32/2,789.41 = 626.70/x
  3. Step 3: Cross multiply
    1,859.32x = 2,789.41 × 626.70
  4. Step 4: Simplify right side
    1,859.32x = 1,748,123.25
  5. Step 5: Solve for x
    x = 1,748,123.25/1,859.32
  6. Step 6: Final answer
    x = 940.19

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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.