Home / 3,750.79-5,176.81-2,158.51

Finding the Fourth Proportional to 3,750.79, 5,176.81 and 2,158.51

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Solution

The fourth proportional to 3,750.79, 5,176.81 and 2,158.51 is: 2,979.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,750.79 : 5,176.81 = 2,158.51 : x
  2. Step 2: Convert to fraction form
    3,750.79/5,176.81 = 2,158.51/x
  3. Step 3: Cross multiply
    3,750.79x = 5,176.81 × 2,158.51
  4. Step 4: Simplify right side
    3,750.79x = 11,174,177.81
  5. Step 5: Solve for x
    x = 11,174,177.81/3,750.79
  6. Step 6: Final answer
    x = 2,979.16

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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.