Home / 5,151.96-7,728.48-1,642.23

Finding the Fourth Proportional to 5,151.96, 7,728.48 and 1,642.23

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Solution

The fourth proportional to 5,151.96, 7,728.48 and 1,642.23 is: 2,463.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.96 : 7,728.48 = 1,642.23 : x
  2. Step 2: Convert to fraction form
    5,151.96/7,728.48 = 1,642.23/x
  3. Step 3: Cross multiply
    5,151.96x = 7,728.48 × 1,642.23
  4. Step 4: Simplify right side
    5,151.96x = 12,691,941.71
  5. Step 5: Solve for x
    x = 12,691,941.71/5,151.96
  6. Step 6: Final answer
    x = 2,463.52

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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.