Home / 3,123.36-4,309.81-2,653.16

Finding the Fourth Proportional to 3,123.36, 4,309.81 and 2,653.16

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Solution

The fourth proportional to 3,123.36, 4,309.81 and 2,653.16 is: 3,660.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.36 : 4,309.81 = 2,653.16 : x
  2. Step 2: Convert to fraction form
    3,123.36/4,309.81 = 2,653.16/x
  3. Step 3: Cross multiply
    3,123.36x = 4,309.81 × 2,653.16
  4. Step 4: Simplify right side
    3,123.36x = 11,434,587.32
  5. Step 5: Solve for x
    x = 11,434,587.32/3,123.36
  6. Step 6: Final answer
    x = 3,660.99

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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.