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Finding the Fourth Proportional to 5,448.64, 7,518.90 and 3,090.64

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Solution

The fourth proportional to 5,448.64, 7,518.90 and 3,090.64 is: 4,264.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,448.64 : 7,518.90 = 3,090.64 : x
  2. Step 2: Convert to fraction form
    5,448.64/7,518.90 = 3,090.64/x
  3. Step 3: Cross multiply
    5,448.64x = 7,518.90 × 3,090.64
  4. Step 4: Simplify right side
    5,448.64x = 23,238,213.10
  5. Step 5: Solve for x
    x = 23,238,213.10/5,448.64
  6. Step 6: Final answer
    x = 4,264.96

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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.