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Finding the Fourth Proportional to 7,673.10, 11,521.80 and 5,607.60

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Solution

The fourth proportional to 7,673.10, 11,521.80 and 5,607.60 is: 8,420.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,673.10 : 11,521.80 = 5,607.60 : x
  2. Step 2: Convert to fraction form
    7,673.10/11,521.80 = 5,607.60/x
  3. Step 3: Cross multiply
    7,673.10x = 11,521.80 × 5,607.60
  4. Step 4: Simplify right side
    7,673.10x = 64,609,645.68
  5. Step 5: Solve for x
    x = 64,609,645.68/7,673.10
  6. Step 6: Final answer
    x = 8,420.28

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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.