Home / 3,386.43-4,675.50-2,128.86

Finding the Fourth Proportional to 3,386.43, 4,675.50 and 2,128.86

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Solution

The fourth proportional to 3,386.43, 4,675.50 and 2,128.86 is: 2,939.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,386.43 : 4,675.50 = 2,128.86 : x
  2. Step 2: Convert to fraction form
    3,386.43/4,675.50 = 2,128.86/x
  3. Step 3: Cross multiply
    3,386.43x = 4,675.50 × 2,128.86
  4. Step 4: Simplify right side
    3,386.43x = 9,953,484.93
  5. Step 5: Solve for x
    x = 9,953,484.93/3,386.43
  6. Step 6: Final answer
    x = 2,939.23

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.