Home / 1,979.04-2,730.52-1,139.44

Finding the Fourth Proportional to 1,979.04, 2,730.52 and 1,139.44

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Solution

The fourth proportional to 1,979.04, 2,730.52 and 1,139.44 is: 1,572.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,979.04 : 2,730.52 = 1,139.44 : x
  2. Step 2: Convert to fraction form
    1,979.04/2,730.52 = 1,139.44/x
  3. Step 3: Cross multiply
    1,979.04x = 2,730.52 × 1,139.44
  4. Step 4: Simplify right side
    1,979.04x = 3,111,263.71
  5. Step 5: Solve for x
    x = 3,111,263.71/1,979.04
  6. Step 6: Final answer
    x = 1,572.11

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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.