Home / 1,979.26-2,970.20-1,055.48

Finding the Fourth Proportional to 1,979.26, 2,970.20 and 1,055.48

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Solution

The fourth proportional to 1,979.26, 2,970.20 and 1,055.48 is: 1,583.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.26 : 2,970.20 = 1,055.48 : x
  2. Step 2: Convert to fraction form
    1,979.26/2,970.20 = 1,055.48/x
  3. Step 3: Cross multiply
    1,979.26x = 2,970.20 × 1,055.48
  4. Step 4: Simplify right side
    1,979.26x = 3,134,985.25
  5. Step 5: Solve for x
    x = 3,134,985.25/1,979.26
  6. Step 6: Final answer
    x = 1,583.92

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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.