Home / 7,931.12-11,897.32-2,665.92

Finding the Fourth Proportional to 7,931.12, 11,897.32 and 2,665.92

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Solution

The fourth proportional to 7,931.12, 11,897.32 and 2,665.92 is: 3,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.12 : 11,897.32 = 2,665.92 : x
  2. Step 2: Convert to fraction form
    7,931.12/11,897.32 = 2,665.92/x
  3. Step 3: Cross multiply
    7,931.12x = 11,897.32 × 2,665.92
  4. Step 4: Simplify right side
    7,931.12x = 31,717,303.33
  5. Step 5: Solve for x
    x = 31,717,303.33/7,931.12
  6. Step 6: Final answer
    x = 3,999.10

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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.