Home / 5,287.78-7,297.29-2,930.07

Finding the Fourth Proportional to 5,287.78, 7,297.29 and 2,930.07

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Solution

The fourth proportional to 5,287.78, 7,297.29 and 2,930.07 is: 4,043.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.78 : 7,297.29 = 2,930.07 : x
  2. Step 2: Convert to fraction form
    5,287.78/7,297.29 = 2,930.07/x
  3. Step 3: Cross multiply
    5,287.78x = 7,297.29 × 2,930.07
  4. Step 4: Simplify right side
    5,287.78x = 21,381,597.88
  5. Step 5: Solve for x
    x = 21,381,597.88/5,287.78
  6. Step 6: Final answer
    x = 4,043.59

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.