Home / 3,146.57-4,719.23-2,990.45

Finding the Fourth Proportional to 3,146.57, 4,719.23 and 2,990.45

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Solution

The fourth proportional to 3,146.57, 4,719.23 and 2,990.45 is: 4,485.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,146.57 : 4,719.23 = 2,990.45 : x
  2. Step 2: Convert to fraction form
    3,146.57/4,719.23 = 2,990.45/x
  3. Step 3: Cross multiply
    3,146.57x = 4,719.23 × 2,990.45
  4. Step 4: Simplify right side
    3,146.57x = 14,112,606.40
  5. Step 5: Solve for x
    x = 14,112,606.40/3,146.57
  6. Step 6: Final answer
    x = 4,485.08

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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.