Home / 7,782.12-11,669.34-3,397.68

Finding the Fourth Proportional to 7,782.12, 11,669.34 and 3,397.68

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Solution

The fourth proportional to 7,782.12, 11,669.34 and 3,397.68 is: 5,094.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,782.12 : 11,669.34 = 3,397.68 : x
  2. Step 2: Convert to fraction form
    7,782.12/11,669.34 = 3,397.68/x
  3. Step 3: Cross multiply
    7,782.12x = 11,669.34 × 3,397.68
  4. Step 4: Simplify right side
    7,782.12x = 39,648,683.13
  5. Step 5: Solve for x
    x = 39,648,683.13/7,782.12
  6. Step 6: Final answer
    x = 5,094.84

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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.