Home / 5,157.87-7,117.99-2,800.01

Finding the Fourth Proportional to 5,157.87, 7,117.99 and 2,800.01

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Solution

The fourth proportional to 5,157.87, 7,117.99 and 2,800.01 is: 3,864.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.87 : 7,117.99 = 2,800.01 : x
  2. Step 2: Convert to fraction form
    5,157.87/7,117.99 = 2,800.01/x
  3. Step 3: Cross multiply
    5,157.87x = 7,117.99 × 2,800.01
  4. Step 4: Simplify right side
    5,157.87x = 19,930,443.18
  5. Step 5: Solve for x
    x = 19,930,443.18/5,157.87
  6. Step 6: Final answer
    x = 3,864.08

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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.