Home / 3,125.04-4,316.10-2,128.59

Finding the Fourth Proportional to 3,125.04, 4,316.10 and 2,128.59

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Solution

The fourth proportional to 3,125.04, 4,316.10 and 2,128.59 is: 2,939.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,125.04 : 4,316.10 = 2,128.59 : x
  2. Step 2: Convert to fraction form
    3,125.04/4,316.10 = 2,128.59/x
  3. Step 3: Cross multiply
    3,125.04x = 4,316.10 × 2,128.59
  4. Step 4: Simplify right side
    3,125.04x = 9,187,207.30
  5. Step 5: Solve for x
    x = 9,187,207.30/3,125.04
  6. Step 6: Final answer
    x = 2,939.87

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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.