Home / 7,745.12-10,688.49-4,208.57

Finding the Fourth Proportional to 7,745.12, 10,688.49 and 4,208.57

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Solution

The fourth proportional to 7,745.12, 10,688.49 and 4,208.57 is: 5,807.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.12 : 10,688.49 = 4,208.57 : x
  2. Step 2: Convert to fraction form
    7,745.12/10,688.49 = 4,208.57/x
  3. Step 3: Cross multiply
    7,745.12x = 10,688.49 × 4,208.57
  4. Step 4: Simplify right side
    7,745.12x = 44,983,204.92
  5. Step 5: Solve for x
    x = 44,983,204.92/7,745.12
  6. Step 6: Final answer
    x = 5,807.95

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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.