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Finding the Fourth Proportional to 3,119.45, 4,303.89 and 1,792.89

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Solution

The fourth proportional to 3,119.45, 4,303.89 and 1,792.89 is: 2,473.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,119.45 : 4,303.89 = 1,792.89 : x
  2. Step 2: Convert to fraction form
    3,119.45/4,303.89 = 1,792.89/x
  3. Step 3: Cross multiply
    3,119.45x = 4,303.89 × 1,792.89
  4. Step 4: Simplify right side
    3,119.45x = 7,716,401.34
  5. Step 5: Solve for x
    x = 7,716,401.34/3,119.45
  6. Step 6: Final answer
    x = 2,473.65

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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.