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Finding the Fourth Proportional to 7,118.99, 9,823.48 and 4,135.46

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Solution

The fourth proportional to 7,118.99, 9,823.48 and 4,135.46 is: 5,706.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,118.99 : 9,823.48 = 4,135.46 : x
  2. Step 2: Convert to fraction form
    7,118.99/9,823.48 = 4,135.46/x
  3. Step 3: Cross multiply
    7,118.99x = 9,823.48 × 4,135.46
  4. Step 4: Simplify right side
    7,118.99x = 40,624,549.14
  5. Step 5: Solve for x
    x = 40,624,549.14/7,118.99
  6. Step 6: Final answer
    x = 5,706.51

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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.