Home / 7,828.11-11,742.38-1,985.18

Finding the Fourth Proportional to 7,828.11, 11,742.38 and 1,985.18

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Solution

The fourth proportional to 7,828.11, 11,742.38 and 1,985.18 is: 2,977.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,828.11 : 11,742.38 = 1,985.18 : x
  2. Step 2: Convert to fraction form
    7,828.11/11,742.38 = 1,985.18/x
  3. Step 3: Cross multiply
    7,828.11x = 11,742.38 × 1,985.18
  4. Step 4: Simplify right side
    7,828.11x = 23,310,669.29
  5. Step 5: Solve for x
    x = 23,310,669.29/7,828.11
  6. Step 6: Final answer
    x = 2,977.82

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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.