Home / 2,419.99-3,341.19-2,157.55

Finding the Fourth Proportional to 2,419.99, 3,341.19 and 2,157.55

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Solution

The fourth proportional to 2,419.99, 3,341.19 and 2,157.55 is: 2,978.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.99 : 3,341.19 = 2,157.55 : x
  2. Step 2: Convert to fraction form
    2,419.99/3,341.19 = 2,157.55/x
  3. Step 3: Cross multiply
    2,419.99x = 3,341.19 × 2,157.55
  4. Step 4: Simplify right side
    2,419.99x = 7,208,784.48
  5. Step 5: Solve for x
    x = 7,208,784.48/2,419.99
  6. Step 6: Final answer
    x = 2,978.85

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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.