Home / 2,129.80-2,941.20-1,659

Finding the Fourth Proportional to 2,129.80, 2,941.20 and 1,659

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Solution

The fourth proportional to 2,129.80, 2,941.20 and 1,659 is: 2,291.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,129.80 : 2,941.20 = 1,659 : x
  2. Step 2: Convert to fraction form
    2,129.80/2,941.20 = 1,659/x
  3. Step 3: Cross multiply
    2,129.80x = 2,941.20 × 1,659
  4. Step 4: Simplify right side
    2,129.80x = 4,879,450.80
  5. Step 5: Solve for x
    x = 4,879,450.80/2,129.80
  6. Step 6: Final answer
    x = 2,291.04

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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.