Home / 7,988.67-11,029.50-5,157.32

Finding the Fourth Proportional to 7,988.67, 11,029.50 and 5,157.32

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Solution

The fourth proportional to 7,988.67, 11,029.50 and 5,157.32 is: 7,120.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,988.67 : 11,029.50 = 5,157.32 : x
  2. Step 2: Convert to fraction form
    7,988.67/11,029.50 = 5,157.32/x
  3. Step 3: Cross multiply
    7,988.67x = 11,029.50 × 5,157.32
  4. Step 4: Simplify right side
    7,988.67x = 56,882,605.79
  5. Step 5: Solve for x
    x = 56,882,605.79/7,988.67
  6. Step 6: Final answer
    x = 7,120.41

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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.