Home / 1,478.44-2,219.69-928.99

Finding the Fourth Proportional to 1,478.44, 2,219.69 and 928.99

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Solution

The fourth proportional to 1,478.44, 2,219.69 and 928.99 is: 1,394.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.44 : 2,219.69 = 928.99 : x
  2. Step 2: Convert to fraction form
    1,478.44/2,219.69 = 928.99/x
  3. Step 3: Cross multiply
    1,478.44x = 2,219.69 × 928.99
  4. Step 4: Simplify right side
    1,478.44x = 2,062,069.81
  5. Step 5: Solve for x
    x = 2,062,069.81/1,478.44
  6. Step 6: Final answer
    x = 1,394.76

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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.