Home / 7,745.27-10,688.18-4,208.40

Finding the Fourth Proportional to 7,745.27, 10,688.18 and 4,208.40

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Solution

The fourth proportional to 7,745.27, 10,688.18 and 4,208.40 is: 5,807.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.27 : 10,688.18 = 4,208.40 : x
  2. Step 2: Convert to fraction form
    7,745.27/10,688.18 = 4,208.40/x
  3. Step 3: Cross multiply
    7,745.27x = 10,688.18 × 4,208.40
  4. Step 4: Simplify right side
    7,745.27x = 44,980,115.67
  5. Step 5: Solve for x
    x = 44,980,115.67/7,745.27
  6. Step 6: Final answer
    x = 5,807.43

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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.