Home / 2,865.23-4,297.91-917.43

Finding the Fourth Proportional to 2,865.23, 4,297.91 and 917.43

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Solution

The fourth proportional to 2,865.23, 4,297.91 and 917.43 is: 1,376.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.23 : 4,297.91 = 917.43 : x
  2. Step 2: Convert to fraction form
    2,865.23/4,297.91 = 917.43/x
  3. Step 3: Cross multiply
    2,865.23x = 4,297.91 × 917.43
  4. Step 4: Simplify right side
    2,865.23x = 3,943,037.52
  5. Step 5: Solve for x
    x = 3,943,037.52/2,865.23
  6. Step 6: Final answer
    x = 1,376.17

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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.