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Finding the Fourth Proportional to 4,689, 6,470.94 and 2,826.12

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Solution

The fourth proportional to 4,689, 6,470.94 and 2,826.12 is: 3,900.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689 : 6,470.94 = 2,826.12 : x
  2. Step 2: Convert to fraction form
    4,689/6,470.94 = 2,826.12/x
  3. Step 3: Cross multiply
    4,689x = 6,470.94 × 2,826.12
  4. Step 4: Simplify right side
    4,689x = 18,287,652.95
  5. Step 5: Solve for x
    x = 18,287,652.95/4,689
  6. Step 6: Final answer
    x = 3,900.12

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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.