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Finding the Fourth Proportional to 6,271.60, 9,412.80 and 5,040.40

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Solution

The fourth proportional to 6,271.60, 9,412.80 and 5,040.40 is: 7,564.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,271.60 : 9,412.80 = 5,040.40 : x
  2. Step 2: Convert to fraction form
    6,271.60/9,412.80 = 5,040.40/x
  3. Step 3: Cross multiply
    6,271.60x = 9,412.80 × 5,040.40
  4. Step 4: Simplify right side
    6,271.60x = 47,444,277.12
  5. Step 5: Solve for x
    x = 47,444,277.12/6,271.60
  6. Step 6: Final answer
    x = 7,564.94

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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.