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Finding the Fourth Proportional to 6,637.70, 9,971.40 and 5,544.20

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Solution

The fourth proportional to 6,637.70, 9,971.40 and 5,544.20 is: 8,328.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,637.70 : 9,971.40 = 5,544.20 : x
  2. Step 2: Convert to fraction form
    6,637.70/9,971.40 = 5,544.20/x
  3. Step 3: Cross multiply
    6,637.70x = 9,971.40 × 5,544.20
  4. Step 4: Simplify right side
    6,637.70x = 55,283,435.88
  5. Step 5: Solve for x
    x = 55,283,435.88/6,637.70
  6. Step 6: Final answer
    x = 8,328.70

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1.5x scale

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.