Home / 5,157.85-7,117.88-2,800.01

Finding the Fourth Proportional to 5,157.85, 7,117.88 and 2,800.01

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Solution

The fourth proportional to 5,157.85, 7,117.88 and 2,800.01 is: 3,864.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,157.85 : 7,117.88 = 2,800.01 : x
  2. Step 2: Convert to fraction form
    5,157.85/7,117.88 = 2,800.01/x
  3. Step 3: Cross multiply
    5,157.85x = 7,117.88 × 2,800.01
  4. Step 4: Simplify right side
    5,157.85x = 19,930,135.18
  5. Step 5: Solve for x
    x = 19,930,135.18/5,157.85
  6. Step 6: Final answer
    x = 3,864.04

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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.