Home / 2,486.77-3,430.30-1,553.65

Finding the Fourth Proportional to 2,486.77, 3,430.30 and 1,553.65

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Solution

The fourth proportional to 2,486.77, 3,430.30 and 1,553.65 is: 2,143.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,486.77 : 3,430.30 = 1,553.65 : x
  2. Step 2: Convert to fraction form
    2,486.77/3,430.30 = 1,553.65/x
  3. Step 3: Cross multiply
    2,486.77x = 3,430.30 × 1,553.65
  4. Step 4: Simplify right side
    2,486.77x = 5,329,485.60
  5. Step 5: Solve for x
    x = 5,329,485.60/2,486.77
  6. Step 6: Final answer
    x = 2,143.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.