Home / 1,479.85-2,219.78-1,155.49

Finding the Fourth Proportional to 1,479.85, 2,219.78 and 1,155.49

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Solution

The fourth proportional to 1,479.85, 2,219.78 and 1,155.49 is: 1,733.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.85 : 2,219.78 = 1,155.49 : x
  2. Step 2: Convert to fraction form
    1,479.85/2,219.78 = 1,155.49/x
  3. Step 3: Cross multiply
    1,479.85x = 2,219.78 × 1,155.49
  4. Step 4: Simplify right side
    1,479.85x = 2,564,933.59
  5. Step 5: Solve for x
    x = 2,564,933.59/1,479.85
  6. Step 6: Final answer
    x = 1,733.24

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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.