Home / 3,003.81-4,147.20-1,886.40

Finding the Fourth Proportional to 3,003.81, 4,147.20 and 1,886.40

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Solution

The fourth proportional to 3,003.81, 4,147.20 and 1,886.40 is: 2,604.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,003.81 : 4,147.20 = 1,886.40 : x
  2. Step 2: Convert to fraction form
    3,003.81/4,147.20 = 1,886.40/x
  3. Step 3: Cross multiply
    3,003.81x = 4,147.20 × 1,886.40
  4. Step 4: Simplify right side
    3,003.81x = 7,823,278.08
  5. Step 5: Solve for x
    x = 7,823,278.08/3,003.81
  6. Step 6: Final answer
    x = 2,604.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.