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Finding the Fourth Proportional to 1,887.08, 2,830.32 and 912.92

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Solution

The fourth proportional to 1,887.08, 2,830.32 and 912.92 is: 1,369.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,887.08 : 2,830.32 = 912.92 : x
  2. Step 2: Convert to fraction form
    1,887.08/2,830.32 = 912.92/x
  3. Step 3: Cross multiply
    1,887.08x = 2,830.32 × 912.92
  4. Step 4: Simplify right side
    1,887.08x = 2,583,855.73
  5. Step 5: Solve for x
    x = 2,583,855.73/1,887.08
  6. Step 6: Final answer
    x = 1,369.23

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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.