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Finding the Fourth Proportional to 1,922.94, 2,884.98 and 812.46

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Solution

The fourth proportional to 1,922.94, 2,884.98 and 812.46 is: 1,218.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,922.94 : 2,884.98 = 812.46 : x
  2. Step 2: Convert to fraction form
    1,922.94/2,884.98 = 812.46/x
  3. Step 3: Cross multiply
    1,922.94x = 2,884.98 × 812.46
  4. Step 4: Simplify right side
    1,922.94x = 2,343,941.67
  5. Step 5: Solve for x
    x = 2,343,941.67/1,922.94
  6. Step 6: Final answer
    x = 1,218.94

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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.