Home / 1,425.84-2,140.11-1,336.30

Finding the Fourth Proportional to 1,425.84, 2,140.11 and 1,336.30

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Solution

The fourth proportional to 1,425.84, 2,140.11 and 1,336.30 is: 2,005.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,425.84 : 2,140.11 = 1,336.30 : x
  2. Step 2: Convert to fraction form
    1,425.84/2,140.11 = 1,336.30/x
  3. Step 3: Cross multiply
    1,425.84x = 2,140.11 × 1,336.30
  4. Step 4: Simplify right side
    1,425.84x = 2,859,828.99
  5. Step 5: Solve for x
    x = 2,859,828.99/1,425.84
  6. Step 6: Final answer
    x = 2,005.72

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1.5x scale

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.