Home / 5,161-7,742.85-1,698.25

Finding the Fourth Proportional to 5,161, 7,742.85 and 1,698.25

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Solution

The fourth proportional to 5,161, 7,742.85 and 1,698.25 is: 2,547.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,161 : 7,742.85 = 1,698.25 : x
  2. Step 2: Convert to fraction form
    5,161/7,742.85 = 1,698.25/x
  3. Step 3: Cross multiply
    5,161x = 7,742.85 × 1,698.25
  4. Step 4: Simplify right side
    5,161x = 13,149,295.01
  5. Step 5: Solve for x
    x = 13,149,295.01/5,161
  6. Step 6: Final answer
    x = 2,547.82

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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.