Home / 1,245.26-1,867.87-561.26

Finding the Fourth Proportional to 1,245.26, 1,867.87 and 561.26

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Solution

The fourth proportional to 1,245.26, 1,867.87 and 561.26 is: 841.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,245.26 : 1,867.87 = 561.26 : x
  2. Step 2: Convert to fraction form
    1,245.26/1,867.87 = 561.26/x
  3. Step 3: Cross multiply
    1,245.26x = 1,867.87 × 561.26
  4. Step 4: Simplify right side
    1,245.26x = 1,048,360.72
  5. Step 5: Solve for x
    x = 1,048,360.72/1,245.26
  6. Step 6: Final answer
    x = 841.88

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.