Home / 1,579.18-2,179.27-916.16

Finding the Fourth Proportional to 1,579.18, 2,179.27 and 916.16

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Solution

The fourth proportional to 1,579.18, 2,179.27 and 916.16 is: 1,264.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,579.18 : 2,179.27 = 916.16 : x
  2. Step 2: Convert to fraction form
    1,579.18/2,179.27 = 916.16/x
  3. Step 3: Cross multiply
    1,579.18x = 2,179.27 × 916.16
  4. Step 4: Simplify right side
    1,579.18x = 1,996,560.00
  5. Step 5: Solve for x
    x = 1,996,560.00/1,579.18
  6. Step 6: Final answer
    x = 1,264.30

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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.