Home / 3,657.12-5,047.04-2,085.72

Finding the Fourth Proportional to 3,657.12, 5,047.04 and 2,085.72

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Solution

The fourth proportional to 3,657.12, 5,047.04 and 2,085.72 is: 2,878.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,657.12 : 5,047.04 = 2,085.72 : x
  2. Step 2: Convert to fraction form
    3,657.12/5,047.04 = 2,085.72/x
  3. Step 3: Cross multiply
    3,657.12x = 5,047.04 × 2,085.72
  4. Step 4: Simplify right side
    3,657.12x = 10,526,712.27
  5. Step 5: Solve for x
    x = 10,526,712.27/3,657.12
  6. Step 6: Final answer
    x = 2,878.42

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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.