Home / 2,465.28-3,697.04-821.39

Finding the Fourth Proportional to 2,465.28, 3,697.04 and 821.39

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Solution

The fourth proportional to 2,465.28, 3,697.04 and 821.39 is: 1,231.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,465.28 : 3,697.04 = 821.39 : x
  2. Step 2: Convert to fraction form
    2,465.28/3,697.04 = 821.39/x
  3. Step 3: Cross multiply
    2,465.28x = 3,697.04 × 821.39
  4. Step 4: Simplify right side
    2,465.28x = 3,036,695.25
  5. Step 5: Solve for x
    x = 3,036,695.25/2,465.28
  6. Step 6: Final answer
    x = 1,231.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.