Home / 7,988.40-11,019.63-5,003.64

Finding the Fourth Proportional to 7,988.40, 11,019.63 and 5,003.64

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Solution

The fourth proportional to 7,988.40, 11,019.63 and 5,003.64 is: 6,902.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.40 : 11,019.63 = 5,003.64 : x
  2. Step 2: Convert to fraction form
    7,988.40/11,019.63 = 5,003.64/x
  3. Step 3: Cross multiply
    7,988.40x = 11,019.63 × 5,003.64
  4. Step 4: Simplify right side
    7,988.40x = 55,138,261.45
  5. Step 5: Solve for x
    x = 55,138,261.45/7,988.40
  6. Step 6: Final answer
    x = 6,902.29

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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.