Home / 2,261.18-3,120.08-1,329.50

Finding the Fourth Proportional to 2,261.18, 3,120.08 and 1,329.50

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Solution

The fourth proportional to 2,261.18, 3,120.08 and 1,329.50 is: 1,834.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.18 : 3,120.08 = 1,329.50 : x
  2. Step 2: Convert to fraction form
    2,261.18/3,120.08 = 1,329.50/x
  3. Step 3: Cross multiply
    2,261.18x = 3,120.08 × 1,329.50
  4. Step 4: Simplify right side
    2,261.18x = 4,148,146.36
  5. Step 5: Solve for x
    x = 4,148,146.36/2,261.18
  6. Step 6: Final answer
    x = 1,834.51

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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.