Home / 1,917.26-2,858.63-1,869.42

Finding the Fourth Proportional to 1,917.26, 2,858.63 and 1,869.42

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Solution

The fourth proportional to 1,917.26, 2,858.63 and 1,869.42 is: 2,787.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,917.26 : 2,858.63 = 1,869.42 : x
  2. Step 2: Convert to fraction form
    1,917.26/2,858.63 = 1,869.42/x
  3. Step 3: Cross multiply
    1,917.26x = 2,858.63 × 1,869.42
  4. Step 4: Simplify right side
    1,917.26x = 5,343,991.98
  5. Step 5: Solve for x
    x = 5,343,991.98/1,917.26
  6. Step 6: Final answer
    x = 2,787.30

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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.