Home / 1,979.57-2,973.98-1,158.43

Finding the Fourth Proportional to 1,979.57, 2,973.98 and 1,158.43

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Solution

The fourth proportional to 1,979.57, 2,973.98 and 1,158.43 is: 1,740.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.57 : 2,973.98 = 1,158.43 : x
  2. Step 2: Convert to fraction form
    1,979.57/2,973.98 = 1,158.43/x
  3. Step 3: Cross multiply
    1,979.57x = 2,973.98 × 1,158.43
  4. Step 4: Simplify right side
    1,979.57x = 3,445,126.99
  5. Step 5: Solve for x
    x = 3,445,126.99/1,979.57
  6. Step 6: Final answer
    x = 1,740.34

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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.