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Finding the Fourth Proportional to 2,385, 3,293.28 and 1,890.18

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Solution

The fourth proportional to 2,385, 3,293.28 and 1,890.18 is: 2,610.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,385 : 3,293.28 = 1,890.18 : x
  2. Step 2: Convert to fraction form
    2,385/3,293.28 = 1,890.18/x
  3. Step 3: Cross multiply
    2,385x = 3,293.28 × 1,890.18
  4. Step 4: Simplify right side
    2,385x = 6,224,891.99
  5. Step 5: Solve for x
    x = 6,224,891.99/2,385
  6. Step 6: Final answer
    x = 2,610.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.