Home / 5,290.09-7,935.48-1,780.44

Finding the Fourth Proportional to 5,290.09, 7,935.48 and 1,780.44

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Solution

The fourth proportional to 5,290.09, 7,935.48 and 1,780.44 is: 2,670.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,290.09 : 7,935.48 = 1,780.44 : x
  2. Step 2: Convert to fraction form
    5,290.09/7,935.48 = 1,780.44/x
  3. Step 3: Cross multiply
    5,290.09x = 7,935.48 × 1,780.44
  4. Step 4: Simplify right side
    5,290.09x = 14,128,646.01
  5. Step 5: Solve for x
    x = 14,128,646.01/5,290.09
  6. Step 6: Final answer
    x = 2,670.78

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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.