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Finding the Fourth Proportional to 5,285.88, 7,929.36 and 1,955.01

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Solution

The fourth proportional to 5,285.88, 7,929.36 and 1,955.01 is: 2,932.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.88 : 7,929.36 = 1,955.01 : x
  2. Step 2: Convert to fraction form
    5,285.88/7,929.36 = 1,955.01/x
  3. Step 3: Cross multiply
    5,285.88x = 7,929.36 × 1,955.01
  4. Step 4: Simplify right side
    5,285.88x = 15,501,977.28
  5. Step 5: Solve for x
    x = 15,501,977.28/5,285.88
  6. Step 6: Final answer
    x = 2,932.71

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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.