Home / 1,919.17-2,878.74-1,658.38

Finding the Fourth Proportional to 1,919.17, 2,878.74 and 1,658.38

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Solution

The fourth proportional to 1,919.17, 2,878.74 and 1,658.38 is: 2,487.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,919.17 : 2,878.74 = 1,658.38 : x
  2. Step 2: Convert to fraction form
    1,919.17/2,878.74 = 1,658.38/x
  3. Step 3: Cross multiply
    1,919.17x = 2,878.74 × 1,658.38
  4. Step 4: Simplify right side
    1,919.17x = 4,774,041.16
  5. Step 5: Solve for x
    x = 4,774,041.16/1,919.17
  6. Step 6: Final answer
    x = 2,487.56

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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.