Home / 2,356.80-3,538.70-1,318.84

Finding the Fourth Proportional to 2,356.80, 3,538.70 and 1,318.84

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Solution

The fourth proportional to 2,356.80, 3,538.70 and 1,318.84 is: 1,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,356.80 : 3,538.70 = 1,318.84 : x
  2. Step 2: Convert to fraction form
    2,356.80/3,538.70 = 1,318.84/x
  3. Step 3: Cross multiply
    2,356.80x = 3,538.70 × 1,318.84
  4. Step 4: Simplify right side
    2,356.80x = 4,666,979.11
  5. Step 5: Solve for x
    x = 4,666,979.11/2,356.80
  6. Step 6: Final answer
    x = 1,980.22

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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.