Home / 3,922.02-5,412.38-2,153.63

Finding the Fourth Proportional to 3,922.02, 5,412.38 and 2,153.63

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Solution

The fourth proportional to 3,922.02, 5,412.38 and 2,153.63 is: 2,972.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,922.02 : 5,412.38 = 2,153.63 : x
  2. Step 2: Convert to fraction form
    3,922.02/5,412.38 = 2,153.63/x
  3. Step 3: Cross multiply
    3,922.02x = 5,412.38 × 2,153.63
  4. Step 4: Simplify right side
    3,922.02x = 11,656,226.11
  5. Step 5: Solve for x
    x = 11,656,226.11/3,922.02
  6. Step 6: Final answer
    x = 2,972.00

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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.