Home / 9,861.49-13,608.93-5,612.87

Finding the Fourth Proportional to 9,861.49, 13,608.93 and 5,612.87

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Solution

The fourth proportional to 9,861.49, 13,608.93 and 5,612.87 is: 7,745.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,861.49 : 13,608.93 = 5,612.87 : x
  2. Step 2: Convert to fraction form
    9,861.49/13,608.93 = 5,612.87/x
  3. Step 3: Cross multiply
    9,861.49x = 13,608.93 × 5,612.87
  4. Step 4: Simplify right side
    9,861.49x = 76,385,188.95
  5. Step 5: Solve for x
    x = 76,385,188.95/9,861.49
  6. Step 6: Final answer
    x = 7,745.81

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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.