Home / 7,718.50-11,577.79-1,875.12

Finding the Fourth Proportional to 7,718.50, 11,577.79 and 1,875.12

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Solution

The fourth proportional to 7,718.50, 11,577.79 and 1,875.12 is: 2,812.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,718.50 : 11,577.79 = 1,875.12 : x
  2. Step 2: Convert to fraction form
    7,718.50/11,577.79 = 1,875.12/x
  3. Step 3: Cross multiply
    7,718.50x = 11,577.79 × 1,875.12
  4. Step 4: Simplify right side
    7,718.50x = 21,709,745.58
  5. Step 5: Solve for x
    x = 21,709,745.58/7,718.50
  6. Step 6: Final answer
    x = 2,812.69

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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.