Home / 5,420.70-8,131.56-1,525.10

Finding the Fourth Proportional to 5,420.70, 8,131.56 and 1,525.10

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Solution

The fourth proportional to 5,420.70, 8,131.56 and 1,525.10 is: 2,287.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.70 : 8,131.56 = 1,525.10 : x
  2. Step 2: Convert to fraction form
    5,420.70/8,131.56 = 1,525.10/x
  3. Step 3: Cross multiply
    5,420.70x = 8,131.56 × 1,525.10
  4. Step 4: Simplify right side
    5,420.70x = 12,401,442.16
  5. Step 5: Solve for x
    x = 12,401,442.16/5,420.70
  6. Step 6: Final answer
    x = 2,287.79

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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.