Home / 5,287.20-7,296.36-2,897.20

Finding the Fourth Proportional to 5,287.20, 7,296.36 and 2,897.20

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Solution

The fourth proportional to 5,287.20, 7,296.36 and 2,897.20 is: 3,998.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,287.20 : 7,296.36 = 2,897.20 : x
  2. Step 2: Convert to fraction form
    5,287.20/7,296.36 = 2,897.20/x
  3. Step 3: Cross multiply
    5,287.20x = 7,296.36 × 2,897.20
  4. Step 4: Simplify right side
    5,287.20x = 21,139,014.19
  5. Step 5: Solve for x
    x = 21,139,014.19/5,287.20
  6. Step 6: Final answer
    x = 3,998.15

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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.