Home / 3,488.07-5,231.35-1,640.05

Finding the Fourth Proportional to 3,488.07, 5,231.35 and 1,640.05

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Solution

The fourth proportional to 3,488.07, 5,231.35 and 1,640.05 is: 2,459.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,488.07 : 5,231.35 = 1,640.05 : x
  2. Step 2: Convert to fraction form
    3,488.07/5,231.35 = 1,640.05/x
  3. Step 3: Cross multiply
    3,488.07x = 5,231.35 × 1,640.05
  4. Step 4: Simplify right side
    3,488.07x = 8,579,675.57
  5. Step 5: Solve for x
    x = 8,579,675.57/3,488.07
  6. Step 6: Final answer
    x = 2,459.72

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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.