Home / 2,415.50-3,328.45-2,284.80

Finding the Fourth Proportional to 2,415.50, 3,328.45 and 2,284.80

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Solution

The fourth proportional to 2,415.50, 3,328.45 and 2,284.80 is: 3,148.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.50 : 3,328.45 = 2,284.80 : x
  2. Step 2: Convert to fraction form
    2,415.50/3,328.45 = 2,284.80/x
  3. Step 3: Cross multiply
    2,415.50x = 3,328.45 × 2,284.80
  4. Step 4: Simplify right side
    2,415.50x = 7,604,842.56
  5. Step 5: Solve for x
    x = 7,604,842.56/2,415.50
  6. Step 6: Final answer
    x = 3,148.35

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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.