Home / 4,239.09-6,358.59-1,640.21

Finding the Fourth Proportional to 4,239.09, 6,358.59 and 1,640.21

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Solution

The fourth proportional to 4,239.09, 6,358.59 and 1,640.21 is: 2,460.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.09 : 6,358.59 = 1,640.21 : x
  2. Step 2: Convert to fraction form
    4,239.09/6,358.59 = 1,640.21/x
  3. Step 3: Cross multiply
    4,239.09x = 6,358.59 × 1,640.21
  4. Step 4: Simplify right side
    4,239.09x = 10,429,391.11
  5. Step 5: Solve for x
    x = 10,429,391.11/4,239.09
  6. Step 6: Final answer
    x = 2,460.29

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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.