Home / 5,287.72-7,296.98-2,897.66

Finding the Fourth Proportional to 5,287.72, 7,296.98 and 2,897.66

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Solution

The fourth proportional to 5,287.72, 7,296.98 and 2,897.66 is: 3,998.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.72 : 7,296.98 = 2,897.66 : x
  2. Step 2: Convert to fraction form
    5,287.72/7,296.98 = 2,897.66/x
  3. Step 3: Cross multiply
    5,287.72x = 7,296.98 × 2,897.66
  4. Step 4: Simplify right side
    5,287.72x = 21,144,167.07
  5. Step 5: Solve for x
    x = 21,144,167.07/5,287.72
  6. Step 6: Final answer
    x = 3,998.73

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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.