Home / 2,487.12-3,730.80-1,317.84

Finding the Fourth Proportional to 2,487.12, 3,730.80 and 1,317.84

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Solution

The fourth proportional to 2,487.12, 3,730.80 and 1,317.84 is: 1,976.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,487.12 : 3,730.80 = 1,317.84 : x
  2. Step 2: Convert to fraction form
    2,487.12/3,730.80 = 1,317.84/x
  3. Step 3: Cross multiply
    2,487.12x = 3,730.80 × 1,317.84
  4. Step 4: Simplify right side
    2,487.12x = 4,916,597.47
  5. Step 5: Solve for x
    x = 4,916,597.47/2,487.12
  6. Step 6: Final answer
    x = 1,976.82

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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.