Home / 2,605.04-3,908.40-1,145.60

Finding the Fourth Proportional to 2,605.04, 3,908.40 and 1,145.60

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Solution

The fourth proportional to 2,605.04, 3,908.40 and 1,145.60 is: 1,718.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,605.04 : 3,908.40 = 1,145.60 : x
  2. Step 2: Convert to fraction form
    2,605.04/3,908.40 = 1,145.60/x
  3. Step 3: Cross multiply
    2,605.04x = 3,908.40 × 1,145.60
  4. Step 4: Simplify right side
    2,605.04x = 4,477,463.04
  5. Step 5: Solve for x
    x = 4,477,463.04/2,605.04
  6. Step 6: Final answer
    x = 1,718.77

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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.