Home / 5,176.51-7,764.86-1,280.81

Finding the Fourth Proportional to 5,176.51, 7,764.86 and 1,280.81

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Solution

The fourth proportional to 5,176.51, 7,764.86 and 1,280.81 is: 1,921.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,176.51 : 7,764.86 = 1,280.81 : x
  2. Step 2: Convert to fraction form
    5,176.51/7,764.86 = 1,280.81/x
  3. Step 3: Cross multiply
    5,176.51x = 7,764.86 × 1,280.81
  4. Step 4: Simplify right side
    5,176.51x = 9,945,332.95
  5. Step 5: Solve for x
    x = 9,945,332.95/5,176.51
  6. Step 6: Final answer
    x = 1,921.24

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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.