Home / 3,128.72-4,316.52-2,010.80

Finding the Fourth Proportional to 3,128.72, 4,316.52 and 2,010.80

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Solution

The fourth proportional to 3,128.72, 4,316.52 and 2,010.80 is: 2,774.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,128.72 : 4,316.52 = 2,010.80 : x
  2. Step 2: Convert to fraction form
    3,128.72/4,316.52 = 2,010.80/x
  3. Step 3: Cross multiply
    3,128.72x = 4,316.52 × 2,010.80
  4. Step 4: Simplify right side
    3,128.72x = 8,679,658.42
  5. Step 5: Solve for x
    x = 8,679,658.42/3,128.72
  6. Step 6: Final answer
    x = 2,774.19

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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.