Home / 4,763.38-7,139.90-1,991.56

Finding the Fourth Proportional to 4,763.38, 7,139.90 and 1,991.56

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Solution

The fourth proportional to 4,763.38, 7,139.90 and 1,991.56 is: 2,985.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,763.38 : 7,139.90 = 1,991.56 : x
  2. Step 2: Convert to fraction form
    4,763.38/7,139.90 = 1,991.56/x
  3. Step 3: Cross multiply
    4,763.38x = 7,139.90 × 1,991.56
  4. Step 4: Simplify right side
    4,763.38x = 14,219,539.24
  5. Step 5: Solve for x
    x = 14,219,539.24/4,763.38
  6. Step 6: Final answer
    x = 2,985.18

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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.