Home / 2,415.75-3,331.20-1,658.70

Finding the Fourth Proportional to 2,415.75, 3,331.20 and 1,658.70

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Solution

The fourth proportional to 2,415.75, 3,331.20 and 1,658.70 is: 2,287.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.75 : 3,331.20 = 1,658.70 : x
  2. Step 2: Convert to fraction form
    2,415.75/3,331.20 = 1,658.70/x
  3. Step 3: Cross multiply
    2,415.75x = 3,331.20 × 1,658.70
  4. Step 4: Simplify right side
    2,415.75x = 5,525,461.44
  5. Step 5: Solve for x
    x = 5,525,461.44/2,415.75
  6. Step 6: Final answer
    x = 2,287.27

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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.