Home / 2,431.55-3,640.75-1,935.63

Finding the Fourth Proportional to 2,431.55, 3,640.75 and 1,935.63

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Solution

The fourth proportional to 2,431.55, 3,640.75 and 1,935.63 is: 2,898.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,431.55 : 3,640.75 = 1,935.63 : x
  2. Step 2: Convert to fraction form
    2,431.55/3,640.75 = 1,935.63/x
  3. Step 3: Cross multiply
    2,431.55x = 3,640.75 × 1,935.63
  4. Step 4: Simplify right side
    2,431.55x = 7,047,140.08
  5. Step 5: Solve for x
    x = 7,047,140.08/2,431.55
  6. Step 6: Final answer
    x = 2,898.21

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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.