Home / 3,577.40-4,938.14-2,085.78

Finding the Fourth Proportional to 3,577.40, 4,938.14 and 2,085.78

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Solution

The fourth proportional to 3,577.40, 4,938.14 and 2,085.78 is: 2,879.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,577.40 : 4,938.14 = 2,085.78 : x
  2. Step 2: Convert to fraction form
    3,577.40/4,938.14 = 2,085.78/x
  3. Step 3: Cross multiply
    3,577.40x = 4,938.14 × 2,085.78
  4. Step 4: Simplify right side
    3,577.40x = 10,299,873.65
  5. Step 5: Solve for x
    x = 10,299,873.65/3,577.40
  6. Step 6: Final answer
    x = 2,879.15

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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.