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Finding the Fourth Proportional to 7,613.02, 11,420.88 and 2,685.52

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Solution

The fourth proportional to 7,613.02, 11,420.88 and 2,685.52 is: 4,028.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,613.02 : 11,420.88 = 2,685.52 : x
  2. Step 2: Convert to fraction form
    7,613.02/11,420.88 = 2,685.52/x
  3. Step 3: Cross multiply
    7,613.02x = 11,420.88 × 2,685.52
  4. Step 4: Simplify right side
    7,613.02x = 30,671,001.66
  5. Step 5: Solve for x
    x = 30,671,001.66/7,613.02
  6. Step 6: Final answer
    x = 4,028.76

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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.