Home / 1,655.63-2,479.81-1,217.64

Finding the Fourth Proportional to 1,655.63, 2,479.81 and 1,217.64

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Solution

The fourth proportional to 1,655.63, 2,479.81 and 1,217.64 is: 1,823.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,655.63 : 2,479.81 = 1,217.64 : x
  2. Step 2: Convert to fraction form
    1,655.63/2,479.81 = 1,217.64/x
  3. Step 3: Cross multiply
    1,655.63x = 2,479.81 × 1,217.64
  4. Step 4: Simplify right side
    1,655.63x = 3,019,515.85
  5. Step 5: Solve for x
    x = 3,019,515.85/1,655.63
  6. Step 6: Final answer
    x = 1,823.79

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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.