Home / 1,628.57-2,247.42-929.95

Finding the Fourth Proportional to 1,628.57, 2,247.42 and 929.95

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Solution

The fourth proportional to 1,628.57, 2,247.42 and 929.95 is: 1,283.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.57 : 2,247.42 = 929.95 : x
  2. Step 2: Convert to fraction form
    1,628.57/2,247.42 = 929.95/x
  3. Step 3: Cross multiply
    1,628.57x = 2,247.42 × 929.95
  4. Step 4: Simplify right side
    1,628.57x = 2,089,976.99
  5. Step 5: Solve for x
    x = 2,089,976.99/1,628.57
  6. Step 6: Final answer
    x = 1,283.32

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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.