Home / 1,628.39-2,247.15-929.75

Finding the Fourth Proportional to 1,628.39, 2,247.15 and 929.75

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Solution

The fourth proportional to 1,628.39, 2,247.15 and 929.75 is: 1,283.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,628.39 : 2,247.15 = 929.75 : x
  2. Step 2: Convert to fraction form
    1,628.39/2,247.15 = 929.75/x
  3. Step 3: Cross multiply
    1,628.39x = 2,247.15 × 929.75
  4. Step 4: Simplify right side
    1,628.39x = 2,089,287.71
  5. Step 5: Solve for x
    x = 2,089,287.71/1,628.39
  6. Step 6: Final answer
    x = 1,283.04

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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.