Home / 6,447.21-8,897.51-3,615.49

Finding the Fourth Proportional to 6,447.21, 8,897.51 and 3,615.49

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Solution

The fourth proportional to 6,447.21, 8,897.51 and 3,615.49 is: 4,989.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,447.21 : 8,897.51 = 3,615.49 : x
  2. Step 2: Convert to fraction form
    6,447.21/8,897.51 = 3,615.49/x
  3. Step 3: Cross multiply
    6,447.21x = 8,897.51 × 3,615.49
  4. Step 4: Simplify right side
    6,447.21x = 32,168,813.94
  5. Step 5: Solve for x
    x = 32,168,813.94/6,447.21
  6. Step 6: Final answer
    x = 4,989.58

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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.