Home / 5,190.85-7,781.64-1,903.18

Finding the Fourth Proportional to 5,190.85, 7,781.64 and 1,903.18

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Solution

The fourth proportional to 5,190.85, 7,781.64 and 1,903.18 is: 2,853.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,190.85 : 7,781.64 = 1,903.18 : x
  2. Step 2: Convert to fraction form
    5,190.85/7,781.64 = 1,903.18/x
  3. Step 3: Cross multiply
    5,190.85x = 7,781.64 × 1,903.18
  4. Step 4: Simplify right side
    5,190.85x = 14,809,829.84
  5. Step 5: Solve for x
    x = 14,809,829.84/5,190.85
  6. Step 6: Final answer
    x = 2,853.07

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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.