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Finding the Fourth Proportional to 1,859.58, 2,789.40 and 936.30

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Solution

The fourth proportional to 1,859.58, 2,789.40 and 936.30 is: 1,404.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.58 : 2,789.40 = 936.30 : x
  2. Step 2: Convert to fraction form
    1,859.58/2,789.40 = 936.30/x
  3. Step 3: Cross multiply
    1,859.58x = 2,789.40 × 936.30
  4. Step 4: Simplify right side
    1,859.58x = 2,611,715.22
  5. Step 5: Solve for x
    x = 2,611,715.22/1,859.58
  6. Step 6: Final answer
    x = 1,404.47

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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.