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Finding the Fourth Proportional to 1,919.76, 2,879.64 and 893.04

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Solution

The fourth proportional to 1,919.76, 2,879.64 and 893.04 is: 1,339.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.76 : 2,879.64 = 893.04 : x
  2. Step 2: Convert to fraction form
    1,919.76/2,879.64 = 893.04/x
  3. Step 3: Cross multiply
    1,919.76x = 2,879.64 × 893.04
  4. Step 4: Simplify right side
    1,919.76x = 2,571,633.71
  5. Step 5: Solve for x
    x = 2,571,633.71/1,919.76
  6. Step 6: Final answer
    x = 1,339.56

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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.