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Finding the Fourth Proportional to 5,612.88, 7,745.75 and 3,060.65

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Solution

The fourth proportional to 5,612.88, 7,745.75 and 3,060.65 is: 4,223.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,612.88 : 7,745.75 = 3,060.65 : x
  2. Step 2: Convert to fraction form
    5,612.88/7,745.75 = 3,060.65/x
  3. Step 3: Cross multiply
    5,612.88x = 7,745.75 × 3,060.65
  4. Step 4: Simplify right side
    5,612.88x = 23,706,975.71
  5. Step 5: Solve for x
    x = 23,706,975.71/5,612.88
  6. Step 6: Final answer
    x = 4,223.67

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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.