Home / 2,478.80-3,417.72-2,183.60

Finding the Fourth Proportional to 2,478.80, 3,417.72 and 2,183.60

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Solution

The fourth proportional to 2,478.80, 3,417.72 and 2,183.60 is: 3,010.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,478.80 : 3,417.72 = 2,183.60 : x
  2. Step 2: Convert to fraction form
    2,478.80/3,417.72 = 2,183.60/x
  3. Step 3: Cross multiply
    2,478.80x = 3,417.72 × 2,183.60
  4. Step 4: Simplify right side
    2,478.80x = 7,462,933.39
  5. Step 5: Solve for x
    x = 7,462,933.39/2,478.80
  6. Step 6: Final answer
    x = 3,010.70

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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.