Home / 5,158.62-7,118.69-2,800.70

Finding the Fourth Proportional to 5,158.62, 7,118.69 and 2,800.70

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Solution

The fourth proportional to 5,158.62, 7,118.69 and 2,800.70 is: 3,864.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.62 : 7,118.69 = 2,800.70 : x
  2. Step 2: Convert to fraction form
    5,158.62/7,118.69 = 2,800.70/x
  3. Step 3: Cross multiply
    5,158.62x = 7,118.69 × 2,800.70
  4. Step 4: Simplify right side
    5,158.62x = 19,937,315.08
  5. Step 5: Solve for x
    x = 19,937,315.08/5,158.62
  6. Step 6: Final answer
    x = 3,864.85

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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.