Home / 3,020.80-4,534-1,290.64

Finding the Fourth Proportional to 3,020.80, 4,534 and 1,290.64

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Solution

The fourth proportional to 3,020.80, 4,534 and 1,290.64 is: 1,937.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,020.80 : 4,534 = 1,290.64 : x
  2. Step 2: Convert to fraction form
    3,020.80/4,534 = 1,290.64/x
  3. Step 3: Cross multiply
    3,020.80x = 4,534 × 1,290.64
  4. Step 4: Simplify right side
    3,020.80x = 5,851,761.76
  5. Step 5: Solve for x
    x = 5,851,761.76/3,020.80
  6. Step 6: Final answer
    x = 1,937.16

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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.