Home / 1,481.21-2,220.80-556.59

Finding the Fourth Proportional to 1,481.21, 2,220.80 and 556.59

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Solution

The fourth proportional to 1,481.21, 2,220.80 and 556.59 is: 834.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,481.21 : 2,220.80 = 556.59 : x
  2. Step 2: Convert to fraction form
    1,481.21/2,220.80 = 556.59/x
  3. Step 3: Cross multiply
    1,481.21x = 2,220.80 × 556.59
  4. Step 4: Simplify right side
    1,481.21x = 1,236,075.07
  5. Step 5: Solve for x
    x = 1,236,075.07/1,481.21
  6. Step 6: Final answer
    x = 834.50

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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.