Home / 7,745.18-10,688.31-4,208.39

Finding the Fourth Proportional to 7,745.18, 10,688.31 and 4,208.39

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Solution

The fourth proportional to 7,745.18, 10,688.31 and 4,208.39 is: 5,807.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.18 : 10,688.31 = 4,208.39 : x
  2. Step 2: Convert to fraction form
    7,745.18/10,688.31 = 4,208.39/x
  3. Step 3: Cross multiply
    7,745.18x = 10,688.31 × 4,208.39
  4. Step 4: Simplify right side
    7,745.18x = 44,980,576.92
  5. Step 5: Solve for x
    x = 44,980,576.92/7,745.18
  6. Step 6: Final answer
    x = 5,807.56

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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.