Home / 7,770.47-11,644.36-3,869.51

Finding the Fourth Proportional to 7,770.47, 11,644.36 and 3,869.51

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Solution

The fourth proportional to 7,770.47, 11,644.36 and 3,869.51 is: 5,798.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,770.47 : 11,644.36 = 3,869.51 : x
  2. Step 2: Convert to fraction form
    7,770.47/11,644.36 = 3,869.51/x
  3. Step 3: Cross multiply
    7,770.47x = 11,644.36 × 3,869.51
  4. Step 4: Simplify right side
    7,770.47x = 45,057,899.57
  5. Step 5: Solve for x
    x = 45,057,899.57/7,770.47
  6. Step 6: Final answer
    x = 5,798.61

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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.