Home / 5,421.78-8,131.70-1,525.26

Finding the Fourth Proportional to 5,421.78, 8,131.70 and 1,525.26

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Solution

The fourth proportional to 5,421.78, 8,131.70 and 1,525.26 is: 2,287.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.78 : 8,131.70 = 1,525.26 : x
  2. Step 2: Convert to fraction form
    5,421.78/8,131.70 = 1,525.26/x
  3. Step 3: Cross multiply
    5,421.78x = 8,131.70 × 1,525.26
  4. Step 4: Simplify right side
    5,421.78x = 12,402,956.74
  5. Step 5: Solve for x
    x = 12,402,956.74/5,421.78
  6. Step 6: Final answer
    x = 2,287.62

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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.