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Finding the Fourth Proportional to 3,980.22, 5,969.93 and 1,058.82

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Solution

The fourth proportional to 3,980.22, 5,969.93 and 1,058.82 is: 1,588.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,980.22 : 5,969.93 = 1,058.82 : x
  2. Step 2: Convert to fraction form
    3,980.22/5,969.93 = 1,058.82/x
  3. Step 3: Cross multiply
    3,980.22x = 5,969.93 × 1,058.82
  4. Step 4: Simplify right side
    3,980.22x = 6,321,075.99
  5. Step 5: Solve for x
    x = 6,321,075.99/3,980.22
  6. Step 6: Final answer
    x = 1,588.12

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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.