Home / 3,712.16-5,123.36-2,118.81

Finding the Fourth Proportional to 3,712.16, 5,123.36 and 2,118.81

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Solution

The fourth proportional to 3,712.16, 5,123.36 and 2,118.81 is: 2,924.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,712.16 : 5,123.36 = 2,118.81 : x
  2. Step 2: Convert to fraction form
    3,712.16/5,123.36 = 2,118.81/x
  3. Step 3: Cross multiply
    3,712.16x = 5,123.36 × 2,118.81
  4. Step 4: Simplify right side
    3,712.16x = 10,855,426.40
  5. Step 5: Solve for x
    x = 10,855,426.40/3,712.16
  6. Step 6: Final answer
    x = 2,924.29

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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.