Home / 5,178.90-7,150.77-3,613.98

Finding the Fourth Proportional to 5,178.90, 7,150.77 and 3,613.98

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Solution

The fourth proportional to 5,178.90, 7,150.77 and 3,613.98 is: 4,990.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,178.90 : 7,150.77 = 3,613.98 : x
  2. Step 2: Convert to fraction form
    5,178.90/7,150.77 = 3,613.98/x
  3. Step 3: Cross multiply
    5,178.90x = 7,150.77 × 3,613.98
  4. Step 4: Simplify right side
    5,178.90x = 25,842,739.76
  5. Step 5: Solve for x
    x = 25,842,739.76/5,178.90
  6. Step 6: Final answer
    x = 4,990.01

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.