Home / 4,581.12-6,870.60-1,986

Finding the Fourth Proportional to 4,581.12, 6,870.60 and 1,986

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Solution

The fourth proportional to 4,581.12, 6,870.60 and 1,986 is: 2,978.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,581.12 : 6,870.60 = 1,986 : x
  2. Step 2: Convert to fraction form
    4,581.12/6,870.60 = 1,986/x
  3. Step 3: Cross multiply
    4,581.12x = 6,870.60 × 1,986
  4. Step 4: Simplify right side
    4,581.12x = 13,645,011.60
  5. Step 5: Solve for x
    x = 13,645,011.60/4,581.12
  6. Step 6: Final answer
    x = 2,978.53

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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.