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Finding the Fourth Proportional to 1,884.99, 2,816.34 and 1,820.40

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Solution

The fourth proportional to 1,884.99, 2,816.34 and 1,820.40 is: 2,719.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,884.99 : 2,816.34 = 1,820.40 : x
  2. Step 2: Convert to fraction form
    1,884.99/2,816.34 = 1,820.40/x
  3. Step 3: Cross multiply
    1,884.99x = 2,816.34 × 1,820.40
  4. Step 4: Simplify right side
    1,884.99x = 5,126,847.95
  5. Step 5: Solve for x
    x = 5,126,847.95/1,884.99
  6. Step 6: Final answer
    x = 2,719.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.