Home / 2,756.87-4,135.28-1,113.39

Finding the Fourth Proportional to 2,756.87, 4,135.28 and 1,113.39

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Solution

The fourth proportional to 2,756.87, 4,135.28 and 1,113.39 is: 1,670.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.87 : 4,135.28 = 1,113.39 : x
  2. Step 2: Convert to fraction form
    2,756.87/4,135.28 = 1,113.39/x
  3. Step 3: Cross multiply
    2,756.87x = 4,135.28 × 1,113.39
  4. Step 4: Simplify right side
    2,756.87x = 4,604,182.18
  5. Step 5: Solve for x
    x = 4,604,182.18/2,756.87
  6. Step 6: Final answer
    x = 1,670.07

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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.