Home / 2,927.79-4,395.33-2,811.15

Finding the Fourth Proportional to 2,927.79, 4,395.33 and 2,811.15

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Solution

The fourth proportional to 2,927.79, 4,395.33 and 2,811.15 is: 4,220.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,927.79 : 4,395.33 = 2,811.15 : x
  2. Step 2: Convert to fraction form
    2,927.79/4,395.33 = 2,811.15/x
  3. Step 3: Cross multiply
    2,927.79x = 4,395.33 × 2,811.15
  4. Step 4: Simplify right side
    2,927.79x = 12,355,931.93
  5. Step 5: Solve for x
    x = 12,355,931.93/2,927.79
  6. Step 6: Final answer
    x = 4,220.22

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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.