Home / 7,989.03-11,987.60-5,386.50

Finding the Fourth Proportional to 7,989.03, 11,987.60 and 5,386.50

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Solution

The fourth proportional to 7,989.03, 11,987.60 and 5,386.50 is: 8,082.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.03 : 11,987.60 = 5,386.50 : x
  2. Step 2: Convert to fraction form
    7,989.03/11,987.60 = 5,386.50/x
  3. Step 3: Cross multiply
    7,989.03x = 11,987.60 × 5,386.50
  4. Step 4: Simplify right side
    7,989.03x = 64,571,180.47
  5. Step 5: Solve for x
    x = 64,571,180.47/7,989.03
  6. Step 6: Final answer
    x = 8,082.48

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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.