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Finding the Fourth Proportional to 5,778.51, 7,971.53 and 3,539.67

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Solution

The fourth proportional to 5,778.51, 7,971.53 and 3,539.67 is: 4,883.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,778.51 : 7,971.53 = 3,539.67 : x
  2. Step 2: Convert to fraction form
    5,778.51/7,971.53 = 3,539.67/x
  3. Step 3: Cross multiply
    5,778.51x = 7,971.53 × 3,539.67
  4. Step 4: Simplify right side
    5,778.51x = 28,216,567.90
  5. Step 5: Solve for x
    x = 28,216,567.90/5,778.51
  6. Step 6: Final answer
    x = 4,883.02

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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.