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Finding the Fourth Proportional to 4,215, 5,797.26 and 3,690.12

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Solution

The fourth proportional to 4,215, 5,797.26 and 3,690.12 is: 5,075.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215 : 5,797.26 = 3,690.12 : x
  2. Step 2: Convert to fraction form
    4,215/5,797.26 = 3,690.12/x
  3. Step 3: Cross multiply
    4,215x = 5,797.26 × 3,690.12
  4. Step 4: Simplify right side
    4,215x = 21,392,585.07
  5. Step 5: Solve for x
    x = 21,392,585.07/4,215
  6. Step 6: Final answer
    x = 5,075.35

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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.