Home / 1,914.76-2,639.92-1,284.29

Finding the Fourth Proportional to 1,914.76, 2,639.92 and 1,284.29

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Solution

The fourth proportional to 1,914.76, 2,639.92 and 1,284.29 is: 1,770.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,914.76 : 2,639.92 = 1,284.29 : x
  2. Step 2: Convert to fraction form
    1,914.76/2,639.92 = 1,284.29/x
  3. Step 3: Cross multiply
    1,914.76x = 2,639.92 × 1,284.29
  4. Step 4: Simplify right side
    1,914.76x = 3,390,403.24
  5. Step 5: Solve for x
    x = 3,390,403.24/1,914.76
  6. Step 6: Final answer
    x = 1,770.67

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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.