Home / 2,431.64-3,351.84-2,136.40

Finding the Fourth Proportional to 2,431.64, 3,351.84 and 2,136.40

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Solution

The fourth proportional to 2,431.64, 3,351.84 and 2,136.40 is: 2,944.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.64 : 3,351.84 = 2,136.40 : x
  2. Step 2: Convert to fraction form
    2,431.64/3,351.84 = 2,136.40/x
  3. Step 3: Cross multiply
    2,431.64x = 3,351.84 × 2,136.40
  4. Step 4: Simplify right side
    2,431.64x = 7,160,870.98
  5. Step 5: Solve for x
    x = 7,160,870.98/2,431.64
  6. Step 6: Final answer
    x = 2,944.87

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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.