Home / 1,617.12-2,425.62-692.16

Finding the Fourth Proportional to 1,617.12, 2,425.62 and 692.16

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Solution

The fourth proportional to 1,617.12, 2,425.62 and 692.16 is: 1,038.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,617.12 : 2,425.62 = 692.16 : x
  2. Step 2: Convert to fraction form
    1,617.12/2,425.62 = 692.16/x
  3. Step 3: Cross multiply
    1,617.12x = 2,425.62 × 692.16
  4. Step 4: Simplify right side
    1,617.12x = 1,678,917.14
  5. Step 5: Solve for x
    x = 1,678,917.14/1,617.12
  6. Step 6: Final answer
    x = 1,038.21

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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.