Home / 1,558.32-2,338.42-692.70

Finding the Fourth Proportional to 1,558.32, 2,338.42 and 692.70

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Solution

The fourth proportional to 1,558.32, 2,338.42 and 692.70 is: 1,039.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,558.32 : 2,338.42 = 692.70 : x
  2. Step 2: Convert to fraction form
    1,558.32/2,338.42 = 692.70/x
  3. Step 3: Cross multiply
    1,558.32x = 2,338.42 × 692.70
  4. Step 4: Simplify right side
    1,558.32x = 1,619,823.53
  5. Step 5: Solve for x
    x = 1,619,823.53/1,558.32
  6. Step 6: Final answer
    x = 1,039.47

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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.