Home / 3,313.65-4,572.89-1,821.56

Finding the Fourth Proportional to 3,313.65, 4,572.89 and 1,821.56

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Solution

The fourth proportional to 3,313.65, 4,572.89 and 1,821.56 is: 2,513.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,313.65 : 4,572.89 = 1,821.56 : x
  2. Step 2: Convert to fraction form
    3,313.65/4,572.89 = 1,821.56/x
  3. Step 3: Cross multiply
    3,313.65x = 4,572.89 × 1,821.56
  4. Step 4: Simplify right side
    3,313.65x = 8,329,792.35
  5. Step 5: Solve for x
    x = 8,329,792.35/3,313.65
  6. Step 6: Final answer
    x = 2,513.78

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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.