Home / 3,572.39-4,929.91-1,979.11

Finding the Fourth Proportional to 3,572.39, 4,929.91 and 1,979.11

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Solution

The fourth proportional to 3,572.39, 4,929.91 and 1,979.11 is: 2,731.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,572.39 : 4,929.91 = 1,979.11 : x
  2. Step 2: Convert to fraction form
    3,572.39/4,929.91 = 1,979.11/x
  3. Step 3: Cross multiply
    3,572.39x = 4,929.91 × 1,979.11
  4. Step 4: Simplify right side
    3,572.39x = 9,756,834.18
  5. Step 5: Solve for x
    x = 9,756,834.18/3,572.39
  6. Step 6: Final answer
    x = 2,731.18

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1.5x scale

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.