Home / 3,315.52-4,574.91-1,918

Finding the Fourth Proportional to 3,315.52, 4,574.91 and 1,918

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Solution

The fourth proportional to 3,315.52, 4,574.91 and 1,918 is: 2,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.52 : 4,574.91 = 1,918 : x
  2. Step 2: Convert to fraction form
    3,315.52/4,574.91 = 1,918/x
  3. Step 3: Cross multiply
    3,315.52x = 4,574.91 × 1,918
  4. Step 4: Simplify right side
    3,315.52x = 8,774,677.38
  5. Step 5: Solve for x
    x = 8,774,677.38/3,315.52
  6. Step 6: Final answer
    x = 2,646.55

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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.