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Finding the Fourth Proportional to 6,444.40, 9,676.20 and 4,985.20

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Solution

The fourth proportional to 6,444.40, 9,676.20 and 4,985.20 is: 7,485.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,444.40 : 9,676.20 = 4,985.20 : x
  2. Step 2: Convert to fraction form
    6,444.40/9,676.20 = 4,985.20/x
  3. Step 3: Cross multiply
    6,444.40x = 9,676.20 × 4,985.20
  4. Step 4: Simplify right side
    6,444.40x = 48,237,792.24
  5. Step 5: Solve for x
    x = 48,237,792.24/6,444.40
  6. Step 6: Final answer
    x = 7,485.23

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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.