Home / 2,815.76-4,219.58-2,069.50

Finding the Fourth Proportional to 2,815.76, 4,219.58 and 2,069.50

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Solution

The fourth proportional to 2,815.76, 4,219.58 and 2,069.50 is: 3,101.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,815.76 : 4,219.58 = 2,069.50 : x
  2. Step 2: Convert to fraction form
    2,815.76/4,219.58 = 2,069.50/x
  3. Step 3: Cross multiply
    2,815.76x = 4,219.58 × 2,069.50
  4. Step 4: Simplify right side
    2,815.76x = 8,732,420.81
  5. Step 5: Solve for x
    x = 8,732,420.81/2,815.76
  6. Step 6: Final answer
    x = 3,101.27

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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.