Home / 5,135.16-7,085.70-3,010.80

Finding the Fourth Proportional to 5,135.16, 7,085.70 and 3,010.80

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Solution

The fourth proportional to 5,135.16, 7,085.70 and 3,010.80 is: 4,154.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,135.16 : 7,085.70 = 3,010.80 : x
  2. Step 2: Convert to fraction form
    5,135.16/7,085.70 = 3,010.80/x
  3. Step 3: Cross multiply
    5,135.16x = 7,085.70 × 3,010.80
  4. Step 4: Simplify right side
    5,135.16x = 21,333,625.56
  5. Step 5: Solve for x
    x = 21,333,625.56/5,135.16
  6. Step 6: Final answer
    x = 4,154.42

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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.