Home / 5,245.18-7,238.67-2,887.84

Finding the Fourth Proportional to 5,245.18, 7,238.67 and 2,887.84

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Solution

The fourth proportional to 5,245.18, 7,238.67 and 2,887.84 is: 3,985.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,245.18 : 7,238.67 = 2,887.84 : x
  2. Step 2: Convert to fraction form
    5,245.18/7,238.67 = 2,887.84/x
  3. Step 3: Cross multiply
    5,245.18x = 7,238.67 × 2,887.84
  4. Step 4: Simplify right side
    5,245.18x = 20,904,120.77
  5. Step 5: Solve for x
    x = 20,904,120.77/5,245.18
  6. Step 6: Final answer
    x = 3,985.40

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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.