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Finding the Fourth Proportional to 4,689.63, 6,471.63 and 2,826.63

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Solution

The fourth proportional to 4,689.63, 6,471.63 and 2,826.63 is: 3,900.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,689.63 : 6,471.63 = 2,826.63 : x
  2. Step 2: Convert to fraction form
    4,689.63/6,471.63 = 2,826.63/x
  3. Step 3: Cross multiply
    4,689.63x = 6,471.63 × 2,826.63
  4. Step 4: Simplify right side
    4,689.63x = 18,292,903.51
  5. Step 5: Solve for x
    x = 18,292,903.51/4,689.63
  6. Step 6: Final answer
    x = 3,900.71

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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.