Home / 1,916.16-2,873.28-1,125.72

Finding the Fourth Proportional to 1,916.16, 2,873.28 and 1,125.72

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Solution

The fourth proportional to 1,916.16, 2,873.28 and 1,125.72 is: 1,688.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.16 : 2,873.28 = 1,125.72 : x
  2. Step 2: Convert to fraction form
    1,916.16/2,873.28 = 1,125.72/x
  3. Step 3: Cross multiply
    1,916.16x = 2,873.28 × 1,125.72
  4. Step 4: Simplify right side
    1,916.16x = 3,234,508.76
  5. Step 5: Solve for x
    x = 3,234,508.76/1,916.16
  6. Step 6: Final answer
    x = 1,688.02

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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.