Home / 2,817.11-3,887.55-1,698.05

Finding the Fourth Proportional to 2,817.11, 3,887.55 and 1,698.05

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Solution

The fourth proportional to 2,817.11, 3,887.55 and 1,698.05 is: 2,343.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,817.11 : 3,887.55 = 1,698.05 : x
  2. Step 2: Convert to fraction form
    2,817.11/3,887.55 = 1,698.05/x
  3. Step 3: Cross multiply
    2,817.11x = 3,887.55 × 1,698.05
  4. Step 4: Simplify right side
    2,817.11x = 6,601,254.28
  5. Step 5: Solve for x
    x = 6,601,254.28/2,817.11
  6. Step 6: Final answer
    x = 2,343.27

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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.