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Finding the Fourth Proportional to 7,081.60, 9,762.48 and 4,722.88

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Solution

The fourth proportional to 7,081.60, 9,762.48 and 4,722.88 is: 6,510.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,081.60 : 9,762.48 = 4,722.88 : x
  2. Step 2: Convert to fraction form
    7,081.60/9,762.48 = 4,722.88/x
  3. Step 3: Cross multiply
    7,081.60x = 9,762.48 × 4,722.88
  4. Step 4: Simplify right side
    7,081.60x = 46,107,021.54
  5. Step 5: Solve for x
    x = 46,107,021.54/7,081.60
  6. Step 6: Final answer
    x = 6,510.82

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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.