Home / 5,151.06-7,728.03-1,690.74

Finding the Fourth Proportional to 5,151.06, 7,728.03 and 1,690.74

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Solution

The fourth proportional to 5,151.06, 7,728.03 and 1,690.74 is: 2,536.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.06 : 7,728.03 = 1,690.74 : x
  2. Step 2: Convert to fraction form
    5,151.06/7,728.03 = 1,690.74/x
  3. Step 3: Cross multiply
    5,151.06x = 7,728.03 × 1,690.74
  4. Step 4: Simplify right side
    5,151.06x = 13,066,089.44
  5. Step 5: Solve for x
    x = 13,066,089.44/5,151.06
  6. Step 6: Final answer
    x = 2,536.58

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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.