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Finding the Fourth Proportional to 3,603.92, 4,970.72 and 2,719.76

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Solution

The fourth proportional to 3,603.92, 4,970.72 and 2,719.76 is: 3,751.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,603.92 : 4,970.72 = 2,719.76 : x
  2. Step 2: Convert to fraction form
    3,603.92/4,970.72 = 2,719.76/x
  3. Step 3: Cross multiply
    3,603.92x = 4,970.72 × 2,719.76
  4. Step 4: Simplify right side
    3,603.92x = 13,519,165.43
  5. Step 5: Solve for x
    x = 13,519,165.43/3,603.92
  6. Step 6: Final answer
    x = 3,751.24

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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.