Home / 1,556.67-2,148.21-927.22

Finding the Fourth Proportional to 1,556.67, 2,148.21 and 927.22

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Solution

The fourth proportional to 1,556.67, 2,148.21 and 927.22 is: 1,279.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,556.67 : 2,148.21 = 927.22 : x
  2. Step 2: Convert to fraction form
    1,556.67/2,148.21 = 927.22/x
  3. Step 3: Cross multiply
    1,556.67x = 2,148.21 × 927.22
  4. Step 4: Simplify right side
    1,556.67x = 1,991,863.28
  5. Step 5: Solve for x
    x = 1,991,863.28/1,556.67
  6. Step 6: Final answer
    x = 1,279.57

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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.