Home / 3,688.64-5,533.52-1,091.28

Finding the Fourth Proportional to 3,688.64, 5,533.52 and 1,091.28

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Solution

The fourth proportional to 3,688.64, 5,533.52 and 1,091.28 is: 1,637.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,688.64 : 5,533.52 = 1,091.28 : x
  2. Step 2: Convert to fraction form
    3,688.64/5,533.52 = 1,091.28/x
  3. Step 3: Cross multiply
    3,688.64x = 5,533.52 × 1,091.28
  4. Step 4: Simplify right side
    3,688.64x = 6,038,619.71
  5. Step 5: Solve for x
    x = 6,038,619.71/3,688.64
  6. Step 6: Final answer
    x = 1,637.09

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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.