Home / 2,812.93-4,214.70-1,989.56

Finding the Fourth Proportional to 2,812.93, 4,214.70 and 1,989.56

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Solution

The fourth proportional to 2,812.93, 4,214.70 and 1,989.56 is: 2,981.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.93 : 4,214.70 = 1,989.56 : x
  2. Step 2: Convert to fraction form
    2,812.93/4,214.70 = 1,989.56/x
  3. Step 3: Cross multiply
    2,812.93x = 4,214.70 × 1,989.56
  4. Step 4: Simplify right side
    2,812.93x = 8,385,409.07
  5. Step 5: Solve for x
    x = 8,385,409.07/2,812.93
  6. Step 6: Final answer
    x = 2,981.03

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.