Home / 2,228.99-3,077.63-1,698.78

Finding the Fourth Proportional to 2,228.99, 3,077.63 and 1,698.78

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Solution

The fourth proportional to 2,228.99, 3,077.63 and 1,698.78 is: 2,345.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,228.99 : 3,077.63 = 1,698.78 : x
  2. Step 2: Convert to fraction form
    2,228.99/3,077.63 = 1,698.78/x
  3. Step 3: Cross multiply
    2,228.99x = 3,077.63 × 1,698.78
  4. Step 4: Simplify right side
    2,228.99x = 5,228,225.71
  5. Step 5: Solve for x
    x = 5,228,225.71/2,228.99
  6. Step 6: Final answer
    x = 2,345.56

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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.