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Finding the Fourth Proportional to 7,287.70, 10,936.95 and 5,343.70

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Solution

The fourth proportional to 7,287.70, 10,936.95 and 5,343.70 is: 8,019.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,287.70 : 10,936.95 = 5,343.70 : x
  2. Step 2: Convert to fraction form
    7,287.70/10,936.95 = 5,343.70/x
  3. Step 3: Cross multiply
    7,287.70x = 10,936.95 × 5,343.70
  4. Step 4: Simplify right side
    7,287.70x = 58,443,779.72
  5. Step 5: Solve for x
    x = 58,443,779.72/7,287.70
  6. Step 6: Final answer
    x = 8,019.51

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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.