Home / 7,143.48-9,856.32-4,157.52

Finding the Fourth Proportional to 7,143.48, 9,856.32 and 4,157.52

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Solution

The fourth proportional to 7,143.48, 9,856.32 and 4,157.52 is: 5,736.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.48 : 9,856.32 = 4,157.52 : x
  2. Step 2: Convert to fraction form
    7,143.48/9,856.32 = 4,157.52/x
  3. Step 3: Cross multiply
    7,143.48x = 9,856.32 × 4,157.52
  4. Step 4: Simplify right side
    7,143.48x = 40,977,847.53
  5. Step 5: Solve for x
    x = 40,977,847.53/7,143.48
  6. Step 6: Final answer
    x = 5,736.40

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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.