Home / 7,119.99-10,686.62-3,612.49

Finding the Fourth Proportional to 7,119.99, 10,686.62 and 3,612.49

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Solution

The fourth proportional to 7,119.99, 10,686.62 and 3,612.49 is: 5,422.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.99 : 10,686.62 = 3,612.49 : x
  2. Step 2: Convert to fraction form
    7,119.99/10,686.62 = 3,612.49/x
  3. Step 3: Cross multiply
    7,119.99x = 10,686.62 × 3,612.49
  4. Step 4: Simplify right side
    7,119.99x = 38,605,307.88
  5. Step 5: Solve for x
    x = 38,605,307.88/7,119.99
  6. Step 6: Final answer
    x = 5,422.10

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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.