Home / 7,888.16-10,881.75-5,161.09

Finding the Fourth Proportional to 7,888.16, 10,881.75 and 5,161.09

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Solution

The fourth proportional to 7,888.16, 10,881.75 and 5,161.09 is: 7,119.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.16 : 10,881.75 = 5,161.09 : x
  2. Step 2: Convert to fraction form
    7,888.16/10,881.75 = 5,161.09/x
  3. Step 3: Cross multiply
    7,888.16x = 10,881.75 × 5,161.09
  4. Step 4: Simplify right side
    7,888.16x = 56,161,683.26
  5. Step 5: Solve for x
    x = 56,161,683.26/7,888.16
  6. Step 6: Final answer
    x = 7,119.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.