Home / 7,931.12-11,892.64-2,664.32

Finding the Fourth Proportional to 7,931.12, 11,892.64 and 2,664.32

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Solution

The fourth proportional to 7,931.12, 11,892.64 and 2,664.32 is: 3,995.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.12 : 11,892.64 = 2,664.32 : x
  2. Step 2: Convert to fraction form
    7,931.12/11,892.64 = 2,664.32/x
  3. Step 3: Cross multiply
    7,931.12x = 11,892.64 × 2,664.32
  4. Step 4: Simplify right side
    7,931.12x = 31,685,798.60
  5. Step 5: Solve for x
    x = 31,685,798.60/7,931.12
  6. Step 6: Final answer
    x = 3,995.12

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1.5x scale

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.