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Finding the Fourth Proportional to 3,085.60, 4,257.84 and 1,759.60

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Solution

The fourth proportional to 3,085.60, 4,257.84 and 1,759.60 is: 2,428.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,085.60 : 4,257.84 = 1,759.60 : x
  2. Step 2: Convert to fraction form
    3,085.60/4,257.84 = 1,759.60/x
  3. Step 3: Cross multiply
    3,085.60x = 4,257.84 × 1,759.60
  4. Step 4: Simplify right side
    3,085.60x = 7,492,095.26
  5. Step 5: Solve for x
    x = 7,492,095.26/3,085.60
  6. Step 6: Final answer
    x = 2,428.08

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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.