Home / 2,919.28-4,384.50-1,689.16

Finding the Fourth Proportional to 2,919.28, 4,384.50 and 1,689.16

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Solution

The fourth proportional to 2,919.28, 4,384.50 and 1,689.16 is: 2,536.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,919.28 : 4,384.50 = 1,689.16 : x
  2. Step 2: Convert to fraction form
    2,919.28/4,384.50 = 1,689.16/x
  3. Step 3: Cross multiply
    2,919.28x = 4,384.50 × 1,689.16
  4. Step 4: Simplify right side
    2,919.28x = 7,406,122.02
  5. Step 5: Solve for x
    x = 7,406,122.02/2,919.28
  6. Step 6: Final answer
    x = 2,536.97

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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.