Home / 2,612.80-3,605.56-1,433.80

Finding the Fourth Proportional to 2,612.80, 3,605.56 and 1,433.80

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Solution

The fourth proportional to 2,612.80, 3,605.56 and 1,433.80 is: 1,978.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,612.80 : 3,605.56 = 1,433.80 : x
  2. Step 2: Convert to fraction form
    2,612.80/3,605.56 = 1,433.80/x
  3. Step 3: Cross multiply
    2,612.80x = 3,605.56 × 1,433.80
  4. Step 4: Simplify right side
    2,612.80x = 5,169,651.93
  5. Step 5: Solve for x
    x = 5,169,651.93/2,612.80
  6. Step 6: Final answer
    x = 1,978.59

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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.