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Finding the Fourth Proportional to 7,576.61, 10,455.90 and 4,219.65

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Solution

The fourth proportional to 7,576.61, 10,455.90 and 4,219.65 is: 5,823.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,576.61 : 10,455.90 = 4,219.65 : x
  2. Step 2: Convert to fraction form
    7,576.61/10,455.90 = 4,219.65/x
  3. Step 3: Cross multiply
    7,576.61x = 10,455.90 × 4,219.65
  4. Step 4: Simplify right side
    7,576.61x = 44,120,165.06
  5. Step 5: Solve for x
    x = 44,120,165.06/7,576.61
  6. Step 6: Final answer
    x = 5,823.21

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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.