Home / 5,190.95-7,781.65-2,070.21

Finding the Fourth Proportional to 5,190.95, 7,781.65 and 2,070.21

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Solution

The fourth proportional to 5,190.95, 7,781.65 and 2,070.21 is: 3,103.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.95 : 7,781.65 = 2,070.21 : x
  2. Step 2: Convert to fraction form
    5,190.95/7,781.65 = 2,070.21/x
  3. Step 3: Cross multiply
    5,190.95x = 7,781.65 × 2,070.21
  4. Step 4: Simplify right side
    5,190.95x = 16,109,673.65
  5. Step 5: Solve for x
    x = 16,109,673.65/5,190.95
  6. Step 6: Final answer
    x = 3,103.41

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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.