Home / 3,313.40-4,572.41-1,821.28

Finding the Fourth Proportional to 3,313.40, 4,572.41 and 1,821.28

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Solution

The fourth proportional to 3,313.40, 4,572.41 and 1,821.28 is: 2,513.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.40 : 4,572.41 = 1,821.28 : x
  2. Step 2: Convert to fraction form
    3,313.40/4,572.41 = 1,821.28/x
  3. Step 3: Cross multiply
    3,313.40x = 4,572.41 × 1,821.28
  4. Step 4: Simplify right side
    3,313.40x = 8,327,616.02
  5. Step 5: Solve for x
    x = 8,327,616.02/3,313.40
  6. Step 6: Final answer
    x = 2,513.32

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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.