Home / 2,913.79-4,041.63-2,808.71

Finding the Fourth Proportional to 2,913.79, 4,041.63 and 2,808.71

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Solution

The fourth proportional to 2,913.79, 4,041.63 and 2,808.71 is: 3,895.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,913.79 : 4,041.63 = 2,808.71 : x
  2. Step 2: Convert to fraction form
    2,913.79/4,041.63 = 2,808.71/x
  3. Step 3: Cross multiply
    2,913.79x = 4,041.63 × 2,808.71
  4. Step 4: Simplify right side
    2,913.79x = 11,351,752.55
  5. Step 5: Solve for x
    x = 11,351,752.55/2,913.79
  6. Step 6: Final answer
    x = 3,895.88

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.