Home / 7,765.21-10,715.61-4,228.30

Finding the Fourth Proportional to 7,765.21, 10,715.61 and 4,228.30

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Solution

The fourth proportional to 7,765.21, 10,715.61 and 4,228.30 is: 5,834.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,765.21 : 10,715.61 = 4,228.30 : x
  2. Step 2: Convert to fraction form
    7,765.21/10,715.61 = 4,228.30/x
  3. Step 3: Cross multiply
    7,765.21x = 10,715.61 × 4,228.30
  4. Step 4: Simplify right side
    7,765.21x = 45,308,813.76
  5. Step 5: Solve for x
    x = 45,308,813.76/7,765.21
  6. Step 6: Final answer
    x = 5,834.85

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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.