Home / 2,979.78-4,465.95-1,881.69

Finding the Fourth Proportional to 2,979.78, 4,465.95 and 1,881.69

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Solution

The fourth proportional to 2,979.78, 4,465.95 and 1,881.69 is: 2,820.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,979.78 : 4,465.95 = 1,881.69 : x
  2. Step 2: Convert to fraction form
    2,979.78/4,465.95 = 1,881.69/x
  3. Step 3: Cross multiply
    2,979.78x = 4,465.95 × 1,881.69
  4. Step 4: Simplify right side
    2,979.78x = 8,403,533.46
  5. Step 5: Solve for x
    x = 8,403,533.46/2,979.78
  6. Step 6: Final answer
    x = 2,820.19

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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.