Home / 7,869.26-10,861.20-4,887.05

Finding the Fourth Proportional to 7,869.26, 10,861.20 and 4,887.05

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Solution

The fourth proportional to 7,869.26, 10,861.20 and 4,887.05 is: 6,745.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,869.26 : 10,861.20 = 4,887.05 : x
  2. Step 2: Convert to fraction form
    7,869.26/10,861.20 = 4,887.05/x
  3. Step 3: Cross multiply
    7,869.26x = 10,861.20 × 4,887.05
  4. Step 4: Simplify right side
    7,869.26x = 53,079,173.15
  5. Step 5: Solve for x
    x = 53,079,173.15/7,869.26
  6. Step 6: Final answer
    x = 6,745.13

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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.