Home / 1,515.36-2,272.11-692.85

Finding the Fourth Proportional to 1,515.36, 2,272.11 and 692.85

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Solution

The fourth proportional to 1,515.36, 2,272.11 and 692.85 is: 1,038.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.36 : 2,272.11 = 692.85 : x
  2. Step 2: Convert to fraction form
    1,515.36/2,272.11 = 692.85/x
  3. Step 3: Cross multiply
    1,515.36x = 2,272.11 × 692.85
  4. Step 4: Simplify right side
    1,515.36x = 1,574,231.41
  5. Step 5: Solve for x
    x = 1,574,231.41/1,515.36
  6. Step 6: Final answer
    x = 1,038.85

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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.