Home / 7,716.18-11,574.29-1,872.78

Finding the Fourth Proportional to 7,716.18, 11,574.29 and 1,872.78

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Solution

The fourth proportional to 7,716.18, 11,574.29 and 1,872.78 is: 2,809.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,716.18 : 11,574.29 = 1,872.78 : x
  2. Step 2: Convert to fraction form
    7,716.18/11,574.29 = 1,872.78/x
  3. Step 3: Cross multiply
    7,716.18x = 11,574.29 × 1,872.78
  4. Step 4: Simplify right side
    7,716.18x = 21,676,098.83
  5. Step 5: Solve for x
    x = 21,676,098.83/7,716.18
  6. Step 6: Final answer
    x = 2,809.17

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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.