Home / 2,158.84-2,979.35-1,864.81

Finding the Fourth Proportional to 2,158.84, 2,979.35 and 1,864.81

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Solution

The fourth proportional to 2,158.84, 2,979.35 and 1,864.81 is: 2,573.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,158.84 : 2,979.35 = 1,864.81 : x
  2. Step 2: Convert to fraction form
    2,158.84/2,979.35 = 1,864.81/x
  3. Step 3: Cross multiply
    2,158.84x = 2,979.35 × 1,864.81
  4. Step 4: Simplify right side
    2,158.84x = 5,555,921.67
  5. Step 5: Solve for x
    x = 5,555,921.67/2,158.84
  6. Step 6: Final answer
    x = 2,573.57

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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.