Home / 2,639.48-3,950.40-1,897.16

Finding the Fourth Proportional to 2,639.48, 3,950.40 and 1,897.16

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Solution

The fourth proportional to 2,639.48, 3,950.40 and 1,897.16 is: 2,839.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,639.48 : 3,950.40 = 1,897.16 : x
  2. Step 2: Convert to fraction form
    2,639.48/3,950.40 = 1,897.16/x
  3. Step 3: Cross multiply
    2,639.48x = 3,950.40 × 1,897.16
  4. Step 4: Simplify right side
    2,639.48x = 7,494,540.86
  5. Step 5: Solve for x
    x = 7,494,540.86/2,639.48
  6. Step 6: Final answer
    x = 2,839.40

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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.