Home / 3,128.22-4,317.05-1,784.02

Finding the Fourth Proportional to 3,128.22, 4,317.05 and 1,784.02

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Solution

The fourth proportional to 3,128.22, 4,317.05 and 1,784.02 is: 2,462.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.22 : 4,317.05 = 1,784.02 : x
  2. Step 2: Convert to fraction form
    3,128.22/4,317.05 = 1,784.02/x
  3. Step 3: Cross multiply
    3,128.22x = 4,317.05 × 1,784.02
  4. Step 4: Simplify right side
    3,128.22x = 7,701,703.54
  5. Step 5: Solve for x
    x = 7,701,703.54/3,128.22
  6. Step 6: Final answer
    x = 2,462.01

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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.