Home / 1,868.20-2,802.27-636.47

Finding the Fourth Proportional to 1,868.20, 2,802.27 and 636.47

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Solution

The fourth proportional to 1,868.20, 2,802.27 and 636.47 is: 954.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,868.20 : 2,802.27 = 636.47 : x
  2. Step 2: Convert to fraction form
    1,868.20/2,802.27 = 636.47/x
  3. Step 3: Cross multiply
    1,868.20x = 2,802.27 × 636.47
  4. Step 4: Simplify right side
    1,868.20x = 1,783,550.00
  5. Step 5: Solve for x
    x = 1,783,550.00/1,868.20
  6. Step 6: Final answer
    x = 954.69

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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.