Home / 5,190.02-7,780.40-1,900.88

Finding the Fourth Proportional to 5,190.02, 7,780.40 and 1,900.88

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Solution

The fourth proportional to 5,190.02, 7,780.40 and 1,900.88 is: 2,849.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.02 : 7,780.40 = 1,900.88 : x
  2. Step 2: Convert to fraction form
    5,190.02/7,780.40 = 1,900.88/x
  3. Step 3: Cross multiply
    5,190.02x = 7,780.40 × 1,900.88
  4. Step 4: Simplify right side
    5,190.02x = 14,789,597.25
  5. Step 5: Solve for x
    x = 14,789,597.25/5,190.02
  6. Step 6: Final answer
    x = 2,849.62

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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.