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Finding the Fourth Proportional to 2,753.07, 4,128.05 and 903.68

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Solution

The fourth proportional to 2,753.07, 4,128.05 and 903.68 is: 1,355.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,753.07 : 4,128.05 = 903.68 : x
  2. Step 2: Convert to fraction form
    2,753.07/4,128.05 = 903.68/x
  3. Step 3: Cross multiply
    2,753.07x = 4,128.05 × 903.68
  4. Step 4: Simplify right side
    2,753.07x = 3,730,433.32
  5. Step 5: Solve for x
    x = 3,730,433.32/2,753.07
  6. Step 6: Final answer
    x = 1,355.01

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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.