Home / 7,290.81-10,919.75-5,109.26

Finding the Fourth Proportional to 7,290.81, 10,919.75 and 5,109.26

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Solution

The fourth proportional to 7,290.81, 10,919.75 and 5,109.26 is: 7,652.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,290.81 : 10,919.75 = 5,109.26 : x
  2. Step 2: Convert to fraction form
    7,290.81/10,919.75 = 5,109.26/x
  3. Step 3: Cross multiply
    7,290.81x = 10,919.75 × 5,109.26
  4. Step 4: Simplify right side
    7,290.81x = 55,791,761.74
  5. Step 5: Solve for x
    x = 55,791,761.74/7,290.81
  6. Step 6: Final answer
    x = 7,652.34

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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.