Home / 5,158.45-7,118.64-2,800.60

Finding the Fourth Proportional to 5,158.45, 7,118.64 and 2,800.60

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Solution

The fourth proportional to 5,158.45, 7,118.64 and 2,800.60 is: 3,864.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.45 : 7,118.64 = 2,800.60 : x
  2. Step 2: Convert to fraction form
    5,158.45/7,118.64 = 2,800.60/x
  3. Step 3: Cross multiply
    5,158.45x = 7,118.64 × 2,800.60
  4. Step 4: Simplify right side
    5,158.45x = 19,936,463.18
  5. Step 5: Solve for x
    x = 19,936,463.18/5,158.45
  6. Step 6: Final answer
    x = 3,864.82

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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.