Home / 3,228.80-4,455.81-1,812.47

Finding the Fourth Proportional to 3,228.80, 4,455.81 and 1,812.47

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Solution

The fourth proportional to 3,228.80, 4,455.81 and 1,812.47 is: 2,501.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,228.80 : 4,455.81 = 1,812.47 : x
  2. Step 2: Convert to fraction form
    3,228.80/4,455.81 = 1,812.47/x
  3. Step 3: Cross multiply
    3,228.80x = 4,455.81 × 1,812.47
  4. Step 4: Simplify right side
    3,228.80x = 8,075,999.67
  5. Step 5: Solve for x
    x = 8,075,999.67/3,228.80
  6. Step 6: Final answer
    x = 2,501.24

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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.