Home / 3,138.02-4,705.90-946.07

Finding the Fourth Proportional to 3,138.02, 4,705.90 and 946.07

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Solution

The fourth proportional to 3,138.02, 4,705.90 and 946.07 is: 1,418.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,138.02 : 4,705.90 = 946.07 : x
  2. Step 2: Convert to fraction form
    3,138.02/4,705.90 = 946.07/x
  3. Step 3: Cross multiply
    3,138.02x = 4,705.90 × 946.07
  4. Step 4: Simplify right side
    3,138.02x = 4,452,110.81
  5. Step 5: Solve for x
    x = 4,452,110.81/3,138.02
  6. Step 6: Final answer
    x = 1,418.76

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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.