Home / 1,515.17-2,271.98-692.73

Finding the Fourth Proportional to 1,515.17, 2,271.98 and 692.73

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Solution

The fourth proportional to 1,515.17, 2,271.98 and 692.73 is: 1,038.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.17 : 2,271.98 = 692.73 : x
  2. Step 2: Convert to fraction form
    1,515.17/2,271.98 = 692.73/x
  3. Step 3: Cross multiply
    1,515.17x = 2,271.98 × 692.73
  4. Step 4: Simplify right side
    1,515.17x = 1,573,865.24
  5. Step 5: Solve for x
    x = 1,573,865.24/1,515.17
  6. Step 6: Final answer
    x = 1,038.74

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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.