Home / 5,187.90-7,775.76-1,898.88

Finding the Fourth Proportional to 5,187.90, 7,775.76 and 1,898.88

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Solution

The fourth proportional to 5,187.90, 7,775.76 and 1,898.88 is: 2,846.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,187.90 : 7,775.76 = 1,898.88 : x
  2. Step 2: Convert to fraction form
    5,187.90/7,775.76 = 1,898.88/x
  3. Step 3: Cross multiply
    5,187.90x = 7,775.76 × 1,898.88
  4. Step 4: Simplify right side
    5,187.90x = 14,765,235.15
  5. Step 5: Solve for x
    x = 14,765,235.15/5,187.90
  6. Step 6: Final answer
    x = 2,846.09

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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.