Home / 1,916.48-2,869.84-1,330.72

Finding the Fourth Proportional to 1,916.48, 2,869.84 and 1,330.72

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Solution

The fourth proportional to 1,916.48, 2,869.84 and 1,330.72 is: 1,992.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,916.48 : 2,869.84 = 1,330.72 : x
  2. Step 2: Convert to fraction form
    1,916.48/2,869.84 = 1,330.72/x
  3. Step 3: Cross multiply
    1,916.48x = 2,869.84 × 1,330.72
  4. Step 4: Simplify right side
    1,916.48x = 3,818,953.48
  5. Step 5: Solve for x
    x = 3,818,953.48/1,916.48
  6. Step 6: Final answer
    x = 1,992.69

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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.