Home / 7,119.39-9,814.88-6,135.15

Finding the Fourth Proportional to 7,119.39, 9,814.88 and 6,135.15

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Solution

The fourth proportional to 7,119.39, 9,814.88 and 6,135.15 is: 8,457.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.39 : 9,814.88 = 6,135.15 : x
  2. Step 2: Convert to fraction form
    7,119.39/9,814.88 = 6,135.15/x
  3. Step 3: Cross multiply
    7,119.39x = 9,814.88 × 6,135.15
  4. Step 4: Simplify right side
    7,119.39x = 60,215,730.36
  5. Step 5: Solve for x
    x = 60,215,730.36/7,119.39
  6. Step 6: Final answer
    x = 8,457.99

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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.