Home / 3,030.83-4,183.74-1,911.55

Finding the Fourth Proportional to 3,030.83, 4,183.74 and 1,911.55

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Solution

The fourth proportional to 3,030.83, 4,183.74 and 1,911.55 is: 2,638.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,030.83 : 4,183.74 = 1,911.55 : x
  2. Step 2: Convert to fraction form
    3,030.83/4,183.74 = 1,911.55/x
  3. Step 3: Cross multiply
    3,030.83x = 4,183.74 × 1,911.55
  4. Step 4: Simplify right side
    3,030.83x = 7,997,417.74
  5. Step 5: Solve for x
    x = 7,997,417.74/3,030.83
  6. Step 6: Final answer
    x = 2,638.69

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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.