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Finding the Fourth Proportional to 7,388.40, 10,208.28 and 5,828.40

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Solution

The fourth proportional to 7,388.40, 10,208.28 and 5,828.40 is: 8,052.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,388.40 : 10,208.28 = 5,828.40 : x
  2. Step 2: Convert to fraction form
    7,388.40/10,208.28 = 5,828.40/x
  3. Step 3: Cross multiply
    7,388.40x = 10,208.28 × 5,828.40
  4. Step 4: Simplify right side
    7,388.40x = 59,497,939.15
  5. Step 5: Solve for x
    x = 59,497,939.15/7,388.40
  6. Step 6: Final answer
    x = 8,052.89

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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.