Home / 1,973.40-2,723.52-1,187.70

Finding the Fourth Proportional to 1,973.40, 2,723.52 and 1,187.70

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Solution

The fourth proportional to 1,973.40, 2,723.52 and 1,187.70 is: 1,639.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,973.40 : 2,723.52 = 1,187.70 : x
  2. Step 2: Convert to fraction form
    1,973.40/2,723.52 = 1,187.70/x
  3. Step 3: Cross multiply
    1,973.40x = 2,723.52 × 1,187.70
  4. Step 4: Simplify right side
    1,973.40x = 3,234,724.70
  5. Step 5: Solve for x
    x = 3,234,724.70/1,973.40
  6. Step 6: Final answer
    x = 1,639.16

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.