Home / 7,458.28-11,186.14-1,985

Finding the Fourth Proportional to 7,458.28, 11,186.14 and 1,985

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Solution

The fourth proportional to 7,458.28, 11,186.14 and 1,985 is: 2,977.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,458.28 : 11,186.14 = 1,985 : x
  2. Step 2: Convert to fraction form
    7,458.28/11,186.14 = 1,985/x
  3. Step 3: Cross multiply
    7,458.28x = 11,186.14 × 1,985
  4. Step 4: Simplify right side
    7,458.28x = 22,204,487.90
  5. Step 5: Solve for x
    x = 22,204,487.90/7,458.28
  6. Step 6: Final answer
    x = 2,977.16

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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.