Home / 3,120.81-4,698.65-2,153.27

Finding the Fourth Proportional to 3,120.81, 4,698.65 and 2,153.27

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Solution

The fourth proportional to 3,120.81, 4,698.65 and 2,153.27 is: 3,241.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.81 : 4,698.65 = 2,153.27 : x
  2. Step 2: Convert to fraction form
    3,120.81/4,698.65 = 2,153.27/x
  3. Step 3: Cross multiply
    3,120.81x = 4,698.65 × 2,153.27
  4. Step 4: Simplify right side
    3,120.81x = 10,117,427.83
  5. Step 5: Solve for x
    x = 10,117,427.83/3,120.81
  6. Step 6: Final answer
    x = 3,241.92

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.