Home / 8,420.64-11,607.26-5,763.44

Finding the Fourth Proportional to 8,420.64, 11,607.26 and 5,763.44

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Solution

The fourth proportional to 8,420.64, 11,607.26 and 5,763.44 is: 7,944.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,420.64 : 11,607.26 = 5,763.44 : x
  2. Step 2: Convert to fraction form
    8,420.64/11,607.26 = 5,763.44/x
  3. Step 3: Cross multiply
    8,420.64x = 11,607.26 × 5,763.44
  4. Step 4: Simplify right side
    8,420.64x = 66,897,659.72
  5. Step 5: Solve for x
    x = 66,897,659.72/8,420.64
  6. Step 6: Final answer
    x = 7,944.49

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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.