Home / 7,718.80-11,578.06-1,875.36

Finding the Fourth Proportional to 7,718.80, 11,578.06 and 1,875.36

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Solution

The fourth proportional to 7,718.80, 11,578.06 and 1,875.36 is: 2,813.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.80 : 11,578.06 = 1,875.36 : x
  2. Step 2: Convert to fraction form
    7,718.80/11,578.06 = 1,875.36/x
  3. Step 3: Cross multiply
    7,718.80x = 11,578.06 × 1,875.36
  4. Step 4: Simplify right side
    7,718.80x = 21,713,030.60
  5. Step 5: Solve for x
    x = 21,713,030.60/7,718.80
  6. Step 6: Final answer
    x = 2,813.01

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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.