Home / 7,576.80-10,455.60-4,218.72

Finding the Fourth Proportional to 7,576.80, 10,455.60 and 4,218.72

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Solution

The fourth proportional to 7,576.80, 10,455.60 and 4,218.72 is: 5,821.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,576.80 : 10,455.60 = 4,218.72 : x
  2. Step 2: Convert to fraction form
    7,576.80/10,455.60 = 4,218.72/x
  3. Step 3: Cross multiply
    7,576.80x = 10,455.60 × 4,218.72
  4. Step 4: Simplify right side
    7,576.80x = 44,109,248.83
  5. Step 5: Solve for x
    x = 44,109,248.83/7,576.80
  6. Step 6: Final answer
    x = 5,821.62

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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.