Home / 5,107.85-7,050.17-2,870.45

Finding the Fourth Proportional to 5,107.85, 7,050.17 and 2,870.45

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Solution

The fourth proportional to 5,107.85, 7,050.17 and 2,870.45 is: 3,961.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,107.85 : 7,050.17 = 2,870.45 : x
  2. Step 2: Convert to fraction form
    5,107.85/7,050.17 = 2,870.45/x
  3. Step 3: Cross multiply
    5,107.85x = 7,050.17 × 2,870.45
  4. Step 4: Simplify right side
    5,107.85x = 20,237,158.84
  5. Step 5: Solve for x
    x = 20,237,158.84/5,107.85
  6. Step 6: Final answer
    x = 3,961.97

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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.