Home / 3,128.63-4,693.55-1,397.25

Finding the Fourth Proportional to 3,128.63, 4,693.55 and 1,397.25

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Solution

The fourth proportional to 3,128.63, 4,693.55 and 1,397.25 is: 2,096.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.63 : 4,693.55 = 1,397.25 : x
  2. Step 2: Convert to fraction form
    3,128.63/4,693.55 = 1,397.25/x
  3. Step 3: Cross multiply
    3,128.63x = 4,693.55 × 1,397.25
  4. Step 4: Simplify right side
    3,128.63x = 6,558,055.75
  5. Step 5: Solve for x
    x = 6,558,055.75/3,128.63
  6. Step 6: Final answer
    x = 2,096.15

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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.