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Finding the Fourth Proportional to 7,615.58, 10,509.64 and 4,631.54

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Solution

The fourth proportional to 7,615.58, 10,509.64 and 4,631.54 is: 6,391.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,615.58 : 10,509.64 = 4,631.54 : x
  2. Step 2: Convert to fraction form
    7,615.58/10,509.64 = 4,631.54/x
  3. Step 3: Cross multiply
    7,615.58x = 10,509.64 × 4,631.54
  4. Step 4: Simplify right side
    7,615.58x = 48,675,818.05
  5. Step 5: Solve for x
    x = 48,675,818.05/7,615.58
  6. Step 6: Final answer
    x = 6,391.61

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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.