Home / 2,478.20-3,416.93-2,141.50

Finding the Fourth Proportional to 2,478.20, 3,416.93 and 2,141.50

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Solution

The fourth proportional to 2,478.20, 3,416.93 and 2,141.50 is: 2,952.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.20 : 3,416.93 = 2,141.50 : x
  2. Step 2: Convert to fraction form
    2,478.20/3,416.93 = 2,141.50/x
  3. Step 3: Cross multiply
    2,478.20x = 3,416.93 × 2,141.50
  4. Step 4: Simplify right side
    2,478.20x = 7,317,336.35
  5. Step 5: Solve for x
    x = 7,317,336.35/2,478.20
  6. Step 6: Final answer
    x = 2,952.68

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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.