Home / 3,118.51-4,677.28-1,038.55

Finding the Fourth Proportional to 3,118.51, 4,677.28 and 1,038.55

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Solution

The fourth proportional to 3,118.51, 4,677.28 and 1,038.55 is: 1,557.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,118.51 : 4,677.28 = 1,038.55 : x
  2. Step 2: Convert to fraction form
    3,118.51/4,677.28 = 1,038.55/x
  3. Step 3: Cross multiply
    3,118.51x = 4,677.28 × 1,038.55
  4. Step 4: Simplify right side
    3,118.51x = 4,857,589.14
  5. Step 5: Solve for x
    x = 4,857,589.14/3,118.51
  6. Step 6: Final answer
    x = 1,557.66

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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.