Home / 5,158.29-7,118.58-2,800.58

Finding the Fourth Proportional to 5,158.29, 7,118.58 and 2,800.58

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Solution

The fourth proportional to 5,158.29, 7,118.58 and 2,800.58 is: 3,864.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,158.29 : 7,118.58 = 2,800.58 : x
  2. Step 2: Convert to fraction form
    5,158.29/7,118.58 = 2,800.58/x
  3. Step 3: Cross multiply
    5,158.29x = 7,118.58 × 2,800.58
  4. Step 4: Simplify right side
    5,158.29x = 19,936,152.78
  5. Step 5: Solve for x
    x = 19,936,152.78/5,158.29
  6. Step 6: Final answer
    x = 3,864.88

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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.