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Finding the Fourth Proportional to 5,731.60, 7,900.02 and 3,959.32

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Solution

The fourth proportional to 5,731.60, 7,900.02 and 3,959.32 is: 5,457.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,731.60 : 7,900.02 = 3,959.32 : x
  2. Step 2: Convert to fraction form
    5,731.60/7,900.02 = 3,959.32/x
  3. Step 3: Cross multiply
    5,731.60x = 7,900.02 × 3,959.32
  4. Step 4: Simplify right side
    5,731.60x = 31,278,707.19
  5. Step 5: Solve for x
    x = 31,278,707.19/5,731.60
  6. Step 6: Final answer
    x = 5,457.24

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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.