Home / 10,391.56-15,585.46-2,994.20

Finding the Fourth Proportional to 10,391.56, 15,585.46 and 2,994.20

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Solution

The fourth proportional to 10,391.56, 15,585.46 and 2,994.20 is: 4,490.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,391.56 : 15,585.46 = 2,994.20 : x
  2. Step 2: Convert to fraction form
    10,391.56/15,585.46 = 2,994.20/x
  3. Step 3: Cross multiply
    10,391.56x = 15,585.46 × 2,994.20
  4. Step 4: Simplify right side
    10,391.56x = 46,665,974.21
  5. Step 5: Solve for x
    x = 46,665,974.21/10,391.56
  6. Step 6: Final answer
    x = 4,490.76

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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.