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Finding the Fourth Proportional to 5,703.88, 7,870.91 and 3,185.79

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Solution

The fourth proportional to 5,703.88, 7,870.91 and 3,185.79 is: 4,396.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,703.88 : 7,870.91 = 3,185.79 : x
  2. Step 2: Convert to fraction form
    5,703.88/7,870.91 = 3,185.79/x
  3. Step 3: Cross multiply
    5,703.88x = 7,870.91 × 3,185.79
  4. Step 4: Simplify right side
    5,703.88x = 25,075,050.44
  5. Step 5: Solve for x
    x = 25,075,050.44/5,703.88
  6. Step 6: Final answer
    x = 4,396.14

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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.