Home / 7,890.32-10,889.16-5,099.60

Finding the Fourth Proportional to 7,890.32, 10,889.16 and 5,099.60

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Solution

The fourth proportional to 7,890.32, 10,889.16 and 5,099.60 is: 7,037.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,890.32 : 10,889.16 = 5,099.60 : x
  2. Step 2: Convert to fraction form
    7,890.32/10,889.16 = 5,099.60/x
  3. Step 3: Cross multiply
    7,890.32x = 10,889.16 × 5,099.60
  4. Step 4: Simplify right side
    7,890.32x = 55,530,360.34
  5. Step 5: Solve for x
    x = 55,530,360.34/7,890.32
  6. Step 6: Final answer
    x = 7,037.78

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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.