Home / 4,085.79-5,639.68-2,318.57

Finding the Fourth Proportional to 4,085.79, 5,639.68 and 2,318.57

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Solution

The fourth proportional to 4,085.79, 5,639.68 and 2,318.57 is: 3,200.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,085.79 : 5,639.68 = 2,318.57 : x
  2. Step 2: Convert to fraction form
    4,085.79/5,639.68 = 2,318.57/x
  3. Step 3: Cross multiply
    4,085.79x = 5,639.68 × 2,318.57
  4. Step 4: Simplify right side
    4,085.79x = 13,075,992.86
  5. Step 5: Solve for x
    x = 13,075,992.86/4,085.79
  6. Step 6: Final answer
    x = 3,200.36

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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.