Home / 2,447.12-3,368.76-2,120.24

Finding the Fourth Proportional to 2,447.12, 3,368.76 and 2,120.24

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Solution

The fourth proportional to 2,447.12, 3,368.76 and 2,120.24 is: 2,918.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,447.12 : 3,368.76 = 2,120.24 : x
  2. Step 2: Convert to fraction form
    2,447.12/3,368.76 = 2,120.24/x
  3. Step 3: Cross multiply
    2,447.12x = 3,368.76 × 2,120.24
  4. Step 4: Simplify right side
    2,447.12x = 7,142,579.70
  5. Step 5: Solve for x
    x = 7,142,579.70/2,447.12
  6. Step 6: Final answer
    x = 2,918.77

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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.