Home / 5,158.39-7,118.37-2,800.48

Finding the Fourth Proportional to 5,158.39, 7,118.37 and 2,800.48

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Solution

The fourth proportional to 5,158.39, 7,118.37 and 2,800.48 is: 3,864.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.39 : 7,118.37 = 2,800.48 : x
  2. Step 2: Convert to fraction form
    5,158.39/7,118.37 = 2,800.48/x
  3. Step 3: Cross multiply
    5,158.39x = 7,118.37 × 2,800.48
  4. Step 4: Simplify right side
    5,158.39x = 19,934,852.82
  5. Step 5: Solve for x
    x = 19,934,852.82/5,158.39
  6. Step 6: Final answer
    x = 3,864.55

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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.