Home / 5,158.64-7,118.92-2,800.77

Finding the Fourth Proportional to 5,158.64, 7,118.92 and 2,800.77

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Solution

The fourth proportional to 5,158.64, 7,118.92 and 2,800.77 is: 3,865.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.64 : 7,118.92 = 2,800.77 : x
  2. Step 2: Convert to fraction form
    5,158.64/7,118.92 = 2,800.77/x
  3. Step 3: Cross multiply
    5,158.64x = 7,118.92 × 2,800.77
  4. Step 4: Simplify right side
    5,158.64x = 19,938,434.37
  5. Step 5: Solve for x
    x = 19,938,434.37/5,158.64
  6. Step 6: Final answer
    x = 3,865.05

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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.