Home / 3,215.16-4,438.32-2,429.40

Finding the Fourth Proportional to 3,215.16, 4,438.32 and 2,429.40

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Solution

The fourth proportional to 3,215.16, 4,438.32 and 2,429.40 is: 3,353.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.16 : 4,438.32 = 2,429.40 : x
  2. Step 2: Convert to fraction form
    3,215.16/4,438.32 = 2,429.40/x
  3. Step 3: Cross multiply
    3,215.16x = 4,438.32 × 2,429.40
  4. Step 4: Simplify right side
    3,215.16x = 10,782,454.61
  5. Step 5: Solve for x
    x = 10,782,454.61/3,215.16
  6. Step 6: Final answer
    x = 3,353.63

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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.