Home / 2,085.90-2,880.95-1,643.24

Finding the Fourth Proportional to 2,085.90, 2,880.95 and 1,643.24

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Solution

The fourth proportional to 2,085.90, 2,880.95 and 1,643.24 is: 2,269.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,085.90 : 2,880.95 = 1,643.24 : x
  2. Step 2: Convert to fraction form
    2,085.90/2,880.95 = 1,643.24/x
  3. Step 3: Cross multiply
    2,085.90x = 2,880.95 × 1,643.24
  4. Step 4: Simplify right side
    2,085.90x = 4,734,069.66
  5. Step 5: Solve for x
    x = 4,734,069.66/2,085.90
  6. Step 6: Final answer
    x = 2,269.56

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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.