Home / 5,218.89-7,827.93-1,521.15

Finding the Fourth Proportional to 5,218.89, 7,827.93 and 1,521.15

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Solution

The fourth proportional to 5,218.89, 7,827.93 and 1,521.15 is: 2,281.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,218.89 : 7,827.93 = 1,521.15 : x
  2. Step 2: Convert to fraction form
    5,218.89/7,827.93 = 1,521.15/x
  3. Step 3: Cross multiply
    5,218.89x = 7,827.93 × 1,521.15
  4. Step 4: Simplify right side
    5,218.89x = 11,907,455.72
  5. Step 5: Solve for x
    x = 11,907,455.72/5,218.89
  6. Step 6: Final answer
    x = 2,281.61

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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.