Home / 5,158.49-7,118.73-2,800.64

Finding the Fourth Proportional to 5,158.49, 7,118.73 and 2,800.64

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Solution

The fourth proportional to 5,158.49, 7,118.73 and 2,800.64 is: 3,864.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.49 : 7,118.73 = 2,800.64 : x
  2. Step 2: Convert to fraction form
    5,158.49/7,118.73 = 2,800.64/x
  3. Step 3: Cross multiply
    5,158.49x = 7,118.73 × 2,800.64
  4. Step 4: Simplify right side
    5,158.49x = 19,936,964.39
  5. Step 5: Solve for x
    x = 19,936,964.39/5,158.49
  6. Step 6: Final answer
    x = 3,864.89

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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.