Home / 7,775.40-11,666.70-4,081.80

Finding the Fourth Proportional to 7,775.40, 11,666.70 and 4,081.80

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Solution

The fourth proportional to 7,775.40, 11,666.70 and 4,081.80 is: 6,124.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,775.40 : 11,666.70 = 4,081.80 : x
  2. Step 2: Convert to fraction form
    7,775.40/11,666.70 = 4,081.80/x
  3. Step 3: Cross multiply
    7,775.40x = 11,666.70 × 4,081.80
  4. Step 4: Simplify right side
    7,775.40x = 47,621,136.06
  5. Step 5: Solve for x
    x = 47,621,136.06/7,775.40
  6. Step 6: Final answer
    x = 6,124.59

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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.