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Finding the Fourth Proportional to 7,682.40, 10,598.40 and 5,911.20

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Solution

The fourth proportional to 7,682.40, 10,598.40 and 5,911.20 is: 8,154.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,682.40 : 10,598.40 = 5,911.20 : x
  2. Step 2: Convert to fraction form
    7,682.40/10,598.40 = 5,911.20/x
  3. Step 3: Cross multiply
    7,682.40x = 10,598.40 × 5,911.20
  4. Step 4: Simplify right side
    7,682.40x = 62,649,262.08
  5. Step 5: Solve for x
    x = 62,649,262.08/7,682.40
  6. Step 6: Final answer
    x = 8,154.91

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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.