Home / 1,479.79-2,217.57-1,086.71

Finding the Fourth Proportional to 1,479.79, 2,217.57 and 1,086.71

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Solution

The fourth proportional to 1,479.79, 2,217.57 and 1,086.71 is: 1,628.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,479.79 : 2,217.57 = 1,086.71 : x
  2. Step 2: Convert to fraction form
    1,479.79/2,217.57 = 1,086.71/x
  3. Step 3: Cross multiply
    1,479.79x = 2,217.57 × 1,086.71
  4. Step 4: Simplify right side
    1,479.79x = 2,409,840.33
  5. Step 5: Solve for x
    x = 2,409,840.33/1,479.79
  6. Step 6: Final answer
    x = 1,628.50

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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.