Home / 2,876.21-3,969.32-1,756.82

Finding the Fourth Proportional to 2,876.21, 3,969.32 and 1,756.82

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Solution

The fourth proportional to 2,876.21, 3,969.32 and 1,756.82 is: 2,424.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,876.21 : 3,969.32 = 1,756.82 : x
  2. Step 2: Convert to fraction form
    2,876.21/3,969.32 = 1,756.82/x
  3. Step 3: Cross multiply
    2,876.21x = 3,969.32 × 1,756.82
  4. Step 4: Simplify right side
    2,876.21x = 6,973,352.13
  5. Step 5: Solve for x
    x = 6,973,352.13/2,876.21
  6. Step 6: Final answer
    x = 2,424.50

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1.5x scale

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.