Home / 2,800.50-3,864.72-1,621.56

Finding the Fourth Proportional to 2,800.50, 3,864.72 and 1,621.56

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Solution

The fourth proportional to 2,800.50, 3,864.72 and 1,621.56 is: 2,237.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,800.50 : 3,864.72 = 1,621.56 : x
  2. Step 2: Convert to fraction form
    2,800.50/3,864.72 = 1,621.56/x
  3. Step 3: Cross multiply
    2,800.50x = 3,864.72 × 1,621.56
  4. Step 4: Simplify right side
    2,800.50x = 6,266,875.36
  5. Step 5: Solve for x
    x = 6,266,875.36/2,800.50
  6. Step 6: Final answer
    x = 2,237.77

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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.