Home / 3,943-5,440.10-2,431.12

Finding the Fourth Proportional to 3,943, 5,440.10 and 2,431.12

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Solution

The fourth proportional to 3,943, 5,440.10 and 2,431.12 is: 3,354.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,943 : 5,440.10 = 2,431.12 : x
  2. Step 2: Convert to fraction form
    3,943/5,440.10 = 2,431.12/x
  3. Step 3: Cross multiply
    3,943x = 5,440.10 × 2,431.12
  4. Step 4: Simplify right side
    3,943x = 13,225,535.91
  5. Step 5: Solve for x
    x = 13,225,535.91/3,943
  6. Step 6: Final answer
    x = 3,354.18

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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.