Home / 1,432.70-2,148.41-692.67

Finding the Fourth Proportional to 1,432.70, 2,148.41 and 692.67

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Solution

The fourth proportional to 1,432.70, 2,148.41 and 692.67 is: 1,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.70 : 2,148.41 = 692.67 : x
  2. Step 2: Convert to fraction form
    1,432.70/2,148.41 = 692.67/x
  3. Step 3: Cross multiply
    1,432.70x = 2,148.41 × 692.67
  4. Step 4: Simplify right side
    1,432.70x = 1,488,135.69
  5. Step 5: Solve for x
    x = 1,488,135.69/1,432.70
  6. Step 6: Final answer
    x = 1,038.70

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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.