Home / 6,279.78-9,419.76-1,897.28

Finding the Fourth Proportional to 6,279.78, 9,419.76 and 1,897.28

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Solution

The fourth proportional to 6,279.78, 9,419.76 and 1,897.28 is: 2,845.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,279.78 : 9,419.76 = 1,897.28 : x
  2. Step 2: Convert to fraction form
    6,279.78/9,419.76 = 1,897.28/x
  3. Step 3: Cross multiply
    6,279.78x = 9,419.76 × 1,897.28
  4. Step 4: Simplify right side
    6,279.78x = 17,871,875.15
  5. Step 5: Solve for x
    x = 17,871,875.15/6,279.78
  6. Step 6: Final answer
    x = 2,845.94

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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.