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Finding the Fourth Proportional to 5,552.40, 7,646.72 and 5,431.44

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Solution

The fourth proportional to 5,552.40, 7,646.72 and 5,431.44 is: 7,480.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,552.40 : 7,646.72 = 5,431.44 : x
  2. Step 2: Convert to fraction form
    5,552.40/7,646.72 = 5,431.44/x
  3. Step 3: Cross multiply
    5,552.40x = 7,646.72 × 5,431.44
  4. Step 4: Simplify right side
    5,552.40x = 41,532,700.88
  5. Step 5: Solve for x
    x = 41,532,700.88/5,552.40
  6. Step 6: Final answer
    x = 7,480.13

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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.