Home / 5,142.57-7,712.26-1,855.24

Finding the Fourth Proportional to 5,142.57, 7,712.26 and 1,855.24

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Solution

The fourth proportional to 5,142.57, 7,712.26 and 1,855.24 is: 2,782.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,142.57 : 7,712.26 = 1,855.24 : x
  2. Step 2: Convert to fraction form
    5,142.57/7,712.26 = 1,855.24/x
  3. Step 3: Cross multiply
    5,142.57x = 7,712.26 × 1,855.24
  4. Step 4: Simplify right side
    5,142.57x = 14,308,069.32
  5. Step 5: Solve for x
    x = 14,308,069.32/5,142.57
  6. Step 6: Final answer
    x = 2,782.28

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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.