Home / 5,416.68-8,120.16-1,953.12

Finding the Fourth Proportional to 5,416.68, 8,120.16 and 1,953.12

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Solution

The fourth proportional to 5,416.68, 8,120.16 and 1,953.12 is: 2,927.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,416.68 : 8,120.16 = 1,953.12 : x
  2. Step 2: Convert to fraction form
    5,416.68/8,120.16 = 1,953.12/x
  3. Step 3: Cross multiply
    5,416.68x = 8,120.16 × 1,953.12
  4. Step 4: Simplify right side
    5,416.68x = 15,859,646.90
  5. Step 5: Solve for x
    x = 15,859,646.90/5,416.68
  6. Step 6: Final answer
    x = 2,927.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.