Home / 3,688.44-5,091.12-2,947.56

Finding the Fourth Proportional to 3,688.44, 5,091.12 and 2,947.56

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Solution

The fourth proportional to 3,688.44, 5,091.12 and 2,947.56 is: 4,068.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.44 : 5,091.12 = 2,947.56 : x
  2. Step 2: Convert to fraction form
    3,688.44/5,091.12 = 2,947.56/x
  3. Step 3: Cross multiply
    3,688.44x = 5,091.12 × 2,947.56
  4. Step 4: Simplify right side
    3,688.44x = 15,006,381.67
  5. Step 5: Solve for x
    x = 15,006,381.67/3,688.44
  6. Step 6: Final answer
    x = 4,068.49

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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.