Home / 2,316.78-3,197.07-1,321.98

Finding the Fourth Proportional to 2,316.78, 3,197.07 and 1,321.98

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Solution

The fourth proportional to 2,316.78, 3,197.07 and 1,321.98 is: 1,824.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,316.78 : 3,197.07 = 1,321.98 : x
  2. Step 2: Convert to fraction form
    2,316.78/3,197.07 = 1,321.98/x
  3. Step 3: Cross multiply
    2,316.78x = 3,197.07 × 1,321.98
  4. Step 4: Simplify right side
    2,316.78x = 4,226,462.60
  5. Step 5: Solve for x
    x = 4,226,462.60/2,316.78
  6. Step 6: Final answer
    x = 1,824.28

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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.