Home / 1,558.26-2,150.40-859.64

Finding the Fourth Proportional to 1,558.26, 2,150.40 and 859.64

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Solution

The fourth proportional to 1,558.26, 2,150.40 and 859.64 is: 1,186.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.26 : 2,150.40 = 859.64 : x
  2. Step 2: Convert to fraction form
    1,558.26/2,150.40 = 859.64/x
  3. Step 3: Cross multiply
    1,558.26x = 2,150.40 × 859.64
  4. Step 4: Simplify right side
    1,558.26x = 1,848,559.10
  5. Step 5: Solve for x
    x = 1,848,559.10/1,558.26
  6. Step 6: Final answer
    x = 1,186.30

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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.