Home / 1,558.11-2,150.22-859.48

Finding the Fourth Proportional to 1,558.11, 2,150.22 and 859.48

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Solution

The fourth proportional to 1,558.11, 2,150.22 and 859.48 is: 1,186.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.11 : 2,150.22 = 859.48 : x
  2. Step 2: Convert to fraction form
    1,558.11/2,150.22 = 859.48/x
  3. Step 3: Cross multiply
    1,558.11x = 2,150.22 × 859.48
  4. Step 4: Simplify right side
    1,558.11x = 1,848,071.09
  5. Step 5: Solve for x
    x = 1,848,071.09/1,558.11
  6. Step 6: Final answer
    x = 1,186.10

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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.