Home / 5,157.92-7,117.94-2,800.07

Finding the Fourth Proportional to 5,157.92, 7,117.94 and 2,800.07

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Solution

The fourth proportional to 5,157.92, 7,117.94 and 2,800.07 is: 3,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.92 : 7,117.94 = 2,800.07 : x
  2. Step 2: Convert to fraction form
    5,157.92/7,117.94 = 2,800.07/x
  3. Step 3: Cross multiply
    5,157.92x = 7,117.94 × 2,800.07
  4. Step 4: Simplify right side
    5,157.92x = 19,930,730.26
  5. Step 5: Solve for x
    x = 19,930,730.26/5,157.92
  6. Step 6: Final answer
    x = 3,864.10

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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.