Home / 2,800.32-3,864.48-1,621.60

Finding the Fourth Proportional to 2,800.32, 3,864.48 and 1,621.60

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Solution

The fourth proportional to 2,800.32, 3,864.48 and 1,621.60 is: 2,237.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.32 : 3,864.48 = 1,621.60 : x
  2. Step 2: Convert to fraction form
    2,800.32/3,864.48 = 1,621.60/x
  3. Step 3: Cross multiply
    2,800.32x = 3,864.48 × 1,621.60
  4. Step 4: Simplify right side
    2,800.32x = 6,266,640.77
  5. Step 5: Solve for x
    x = 6,266,640.77/2,800.32
  6. Step 6: Final answer
    x = 2,237.83

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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.