Home / 5,455.64-7,531.20-3,688.28

Finding the Fourth Proportional to 5,455.64, 7,531.20 and 3,688.28

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Solution

The fourth proportional to 5,455.64, 7,531.20 and 3,688.28 is: 5,091.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,455.64 : 7,531.20 = 3,688.28 : x
  2. Step 2: Convert to fraction form
    5,455.64/7,531.20 = 3,688.28/x
  3. Step 3: Cross multiply
    5,455.64x = 7,531.20 × 3,688.28
  4. Step 4: Simplify right side
    5,455.64x = 27,777,174.34
  5. Step 5: Solve for x
    x = 27,777,174.34/5,455.64
  6. Step 6: Final answer
    x = 5,091.46

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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.