Home / 3,101.51-4,650.71-1,021.28

Finding the Fourth Proportional to 3,101.51, 4,650.71 and 1,021.28

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Solution

The fourth proportional to 3,101.51, 4,650.71 and 1,021.28 is: 1,531.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,101.51 : 4,650.71 = 1,021.28 : x
  2. Step 2: Convert to fraction form
    3,101.51/4,650.71 = 1,021.28/x
  3. Step 3: Cross multiply
    3,101.51x = 4,650.71 × 1,021.28
  4. Step 4: Simplify right side
    3,101.51x = 4,749,648.75
  5. Step 5: Solve for x
    x = 4,749,648.75/3,101.51
  6. Step 6: Final answer
    x = 1,531.40

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1.5x scale

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.