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Finding the Fourth Proportional to 7,157.26, 9,874.99 and 4,639.47

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Solution

The fourth proportional to 7,157.26, 9,874.99 and 4,639.47 is: 6,401.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.26 : 9,874.99 = 4,639.47 : x
  2. Step 2: Convert to fraction form
    7,157.26/9,874.99 = 4,639.47/x
  3. Step 3: Cross multiply
    7,157.26x = 9,874.99 × 4,639.47
  4. Step 4: Simplify right side
    7,157.26x = 45,814,719.86
  5. Step 5: Solve for x
    x = 45,814,719.86/7,157.26
  6. Step 6: Final answer
    x = 6,401.15

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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.