Home / 7,987.89-11,034.05-7,242.69

Finding the Fourth Proportional to 7,987.89, 11,034.05 and 7,242.69

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Solution

The fourth proportional to 7,987.89, 11,034.05 and 7,242.69 is: 10,004.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,987.89 : 11,034.05 = 7,242.69 : x
  2. Step 2: Convert to fraction form
    7,987.89/11,034.05 = 7,242.69/x
  3. Step 3: Cross multiply
    7,987.89x = 11,034.05 × 7,242.69
  4. Step 4: Simplify right side
    7,987.89x = 79,916,203.59
  5. Step 5: Solve for x
    x = 79,916,203.59/7,987.89
  6. Step 6: Final answer
    x = 10,004.67

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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.