Home / 1,579.30-2,179.27-916.36

Finding the Fourth Proportional to 1,579.30, 2,179.27 and 916.36

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Solution

The fourth proportional to 1,579.30, 2,179.27 and 916.36 is: 1,264.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.30 : 2,179.27 = 916.36 : x
  2. Step 2: Convert to fraction form
    1,579.30/2,179.27 = 916.36/x
  3. Step 3: Cross multiply
    1,579.30x = 2,179.27 × 916.36
  4. Step 4: Simplify right side
    1,579.30x = 1,996,995.86
  5. Step 5: Solve for x
    x = 1,996,995.86/1,579.30
  6. Step 6: Final answer
    x = 1,264.48

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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.