Home / 7,851.95-11,777.94-3,688.91

Finding the Fourth Proportional to 7,851.95, 11,777.94 and 3,688.91

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Solution

The fourth proportional to 7,851.95, 11,777.94 and 3,688.91 is: 5,533.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,851.95 : 11,777.94 = 3,688.91 : x
  2. Step 2: Convert to fraction form
    7,851.95/11,777.94 = 3,688.91/x
  3. Step 3: Cross multiply
    7,851.95x = 11,777.94 × 3,688.91
  4. Step 4: Simplify right side
    7,851.95x = 43,447,745.92
  5. Step 5: Solve for x
    x = 43,447,745.92/7,851.95
  6. Step 6: Final answer
    x = 5,533.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.