Home / 5,285.12-7,924.32-1,821.68

Finding the Fourth Proportional to 5,285.12, 7,924.32 and 1,821.68

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Solution

The fourth proportional to 5,285.12, 7,924.32 and 1,821.68 is: 2,731.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,285.12 : 7,924.32 = 1,821.68 : x
  2. Step 2: Convert to fraction form
    5,285.12/7,924.32 = 1,821.68/x
  3. Step 3: Cross multiply
    5,285.12x = 7,924.32 × 1,821.68
  4. Step 4: Simplify right side
    5,285.12x = 14,435,575.26
  5. Step 5: Solve for x
    x = 14,435,575.26/5,285.12
  6. Step 6: Final answer
    x = 2,731.36

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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.