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Finding the Fourth Proportional to 7,497.60, 11,239.20 and 5,830.80

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Solution

The fourth proportional to 7,497.60, 11,239.20 and 5,830.80 is: 8,740.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,497.60 : 11,239.20 = 5,830.80 : x
  2. Step 2: Convert to fraction form
    7,497.60/11,239.20 = 5,830.80/x
  3. Step 3: Cross multiply
    7,497.60x = 11,239.20 × 5,830.80
  4. Step 4: Simplify right side
    7,497.60x = 65,533,527.36
  5. Step 5: Solve for x
    x = 65,533,527.36/7,497.60
  6. Step 6: Final answer
    x = 8,740.60

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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.