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Finding the Fourth Proportional to 5,286.83, 7,281.02 and 5,172.03

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Solution

The fourth proportional to 5,286.83, 7,281.02 and 5,172.03 is: 7,122.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,286.83 : 7,281.02 = 5,172.03 : x
  2. Step 2: Convert to fraction form
    5,286.83/7,281.02 = 5,172.03/x
  3. Step 3: Cross multiply
    5,286.83x = 7,281.02 × 5,172.03
  4. Step 4: Simplify right side
    5,286.83x = 37,657,666.80
  5. Step 5: Solve for x
    x = 37,657,666.80/5,286.83
  6. Step 6: Final answer
    x = 7,122.93

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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.