Home / 3,219.81-4,443.28-1,803.48

Finding the Fourth Proportional to 3,219.81, 4,443.28 and 1,803.48

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Solution

The fourth proportional to 3,219.81, 4,443.28 and 1,803.48 is: 2,488.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,219.81 : 4,443.28 = 1,803.48 : x
  2. Step 2: Convert to fraction form
    3,219.81/4,443.28 = 1,803.48/x
  3. Step 3: Cross multiply
    3,219.81x = 4,443.28 × 1,803.48
  4. Step 4: Simplify right side
    3,219.81x = 8,013,362.11
  5. Step 5: Solve for x
    x = 8,013,362.11/3,219.81
  6. Step 6: Final answer
    x = 2,488.77

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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.