Home / 5,175.12-7,763.40-1,889.76

Finding the Fourth Proportional to 5,175.12, 7,763.40 and 1,889.76

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Solution

The fourth proportional to 5,175.12, 7,763.40 and 1,889.76 is: 2,834.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,175.12 : 7,763.40 = 1,889.76 : x
  2. Step 2: Convert to fraction form
    5,175.12/7,763.40 = 1,889.76/x
  3. Step 3: Cross multiply
    5,175.12x = 7,763.40 × 1,889.76
  4. Step 4: Simplify right side
    5,175.12x = 14,670,962.78
  5. Step 5: Solve for x
    x = 14,670,962.78/5,175.12
  6. Step 6: Final answer
    x = 2,834.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.