Home / 1,627.12-2,438.36-1,186.40

Finding the Fourth Proportional to 1,627.12, 2,438.36 and 1,186.40

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Solution

The fourth proportional to 1,627.12, 2,438.36 and 1,186.40 is: 1,777.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,627.12 : 2,438.36 = 1,186.40 : x
  2. Step 2: Convert to fraction form
    1,627.12/2,438.36 = 1,186.40/x
  3. Step 3: Cross multiply
    1,627.12x = 2,438.36 × 1,186.40
  4. Step 4: Simplify right side
    1,627.12x = 2,892,870.30
  5. Step 5: Solve for x
    x = 2,892,870.30/1,627.12
  6. Step 6: Final answer
    x = 1,777.91

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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.