Home / 2,659.23-3,990.33-1,880.28

Finding the Fourth Proportional to 2,659.23, 3,990.33 and 1,880.28

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Solution

The fourth proportional to 2,659.23, 3,990.33 and 1,880.28 is: 2,821.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,659.23 : 3,990.33 = 1,880.28 : x
  2. Step 2: Convert to fraction form
    2,659.23/3,990.33 = 1,880.28/x
  3. Step 3: Cross multiply
    2,659.23x = 3,990.33 × 1,880.28
  4. Step 4: Simplify right side
    2,659.23x = 7,502,937.69
  5. Step 5: Solve for x
    x = 7,502,937.69/2,659.23
  6. Step 6: Final answer
    x = 2,821.47

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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.