Home / 6,931.11-10,389.96-2,985.18

Finding the Fourth Proportional to 6,931.11, 10,389.96 and 2,985.18

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Solution

The fourth proportional to 6,931.11, 10,389.96 and 2,985.18 is: 4,474.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,931.11 : 10,389.96 = 2,985.18 : x
  2. Step 2: Convert to fraction form
    6,931.11/10,389.96 = 2,985.18/x
  3. Step 3: Cross multiply
    6,931.11x = 10,389.96 × 2,985.18
  4. Step 4: Simplify right side
    6,931.11x = 31,015,900.79
  5. Step 5: Solve for x
    x = 31,015,900.79/6,931.11
  6. Step 6: Final answer
    x = 4,474.88

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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.