Home / 7,709.20-11,562.39-3,762.78

Finding the Fourth Proportional to 7,709.20, 11,562.39 and 3,762.78

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Solution

The fourth proportional to 7,709.20, 11,562.39 and 3,762.78 is: 5,643.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,709.20 : 11,562.39 = 3,762.78 : x
  2. Step 2: Convert to fraction form
    7,709.20/11,562.39 = 3,762.78/x
  3. Step 3: Cross multiply
    7,709.20x = 11,562.39 × 3,762.78
  4. Step 4: Simplify right side
    7,709.20x = 43,506,729.84
  5. Step 5: Solve for x
    x = 43,506,729.84/7,709.20
  6. Step 6: Final answer
    x = 5,643.48

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.