Home / 5,157.14-7,113.62-3,140.03

Finding the Fourth Proportional to 5,157.14, 7,113.62 and 3,140.03

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Solution

The fourth proportional to 5,157.14, 7,113.62 and 3,140.03 is: 4,331.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.14 : 7,113.62 = 3,140.03 : x
  2. Step 2: Convert to fraction form
    5,157.14/7,113.62 = 3,140.03/x
  3. Step 3: Cross multiply
    5,157.14x = 7,113.62 × 3,140.03
  4. Step 4: Simplify right side
    5,157.14x = 22,337,005.84
  5. Step 5: Solve for x
    x = 22,337,005.84/5,157.14
  6. Step 6: Final answer
    x = 4,331.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.