Home / 1,343.45-2,011.53-692.90

Finding the Fourth Proportional to 1,343.45, 2,011.53 and 692.90

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Solution

The fourth proportional to 1,343.45, 2,011.53 and 692.90 is: 1,037.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,343.45 : 2,011.53 = 692.90 : x
  2. Step 2: Convert to fraction form
    1,343.45/2,011.53 = 692.90/x
  3. Step 3: Cross multiply
    1,343.45x = 2,011.53 × 692.90
  4. Step 4: Simplify right side
    1,343.45x = 1,393,789.14
  5. Step 5: Solve for x
    x = 1,393,789.14/1,343.45
  6. Step 6: Final answer
    x = 1,037.47

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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.