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Finding the Fourth Proportional to 4,461.40, 6,689.40 and 1,995.76

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Solution

The fourth proportional to 4,461.40, 6,689.40 and 1,995.76 is: 2,992.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,461.40 : 6,689.40 = 1,995.76 : x
  2. Step 2: Convert to fraction form
    4,461.40/6,689.40 = 1,995.76/x
  3. Step 3: Cross multiply
    4,461.40x = 6,689.40 × 1,995.76
  4. Step 4: Simplify right side
    4,461.40x = 13,350,436.94
  5. Step 5: Solve for x
    x = 13,350,436.94/4,461.40
  6. Step 6: Final answer
    x = 2,992.43

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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.