Home / 2,715.12-3,741.36-2,085.60

Finding the Fourth Proportional to 2,715.12, 3,741.36 and 2,085.60

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Solution

The fourth proportional to 2,715.12, 3,741.36 and 2,085.60 is: 2,873.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,715.12 : 3,741.36 = 2,085.60 : x
  2. Step 2: Convert to fraction form
    2,715.12/3,741.36 = 2,085.60/x
  3. Step 3: Cross multiply
    2,715.12x = 3,741.36 × 2,085.60
  4. Step 4: Simplify right side
    2,715.12x = 7,802,980.42
  5. Step 5: Solve for x
    x = 7,802,980.42/2,715.12
  6. Step 6: Final answer
    x = 2,873.90

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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.