Home / 7,745.40-10,688.49-4,208.58

Finding the Fourth Proportional to 7,745.40, 10,688.49 and 4,208.58

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Solution

The fourth proportional to 7,745.40, 10,688.49 and 4,208.58 is: 5,807.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,745.40 : 10,688.49 = 4,208.58 : x
  2. Step 2: Convert to fraction form
    7,745.40/10,688.49 = 4,208.58/x
  3. Step 3: Cross multiply
    7,745.40x = 10,688.49 × 4,208.58
  4. Step 4: Simplify right side
    7,745.40x = 44,983,365.24
  5. Step 5: Solve for x
    x = 44,983,365.24/7,745.40
  6. Step 6: Final answer
    x = 5,807.75

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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.