Home / 9,157.74-12,636.45-5,380.44

Finding the Fourth Proportional to 9,157.74, 12,636.45 and 5,380.44

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Solution

The fourth proportional to 9,157.74, 12,636.45 and 5,380.44 is: 7,424.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,157.74 : 12,636.45 = 5,380.44 : x
  2. Step 2: Convert to fraction form
    9,157.74/12,636.45 = 5,380.44/x
  3. Step 3: Cross multiply
    9,157.74x = 12,636.45 × 5,380.44
  4. Step 4: Simplify right side
    9,157.74x = 67,989,661.04
  5. Step 5: Solve for x
    x = 67,989,661.04/9,157.74
  6. Step 6: Final answer
    x = 7,424.28

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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.