Home / 2,785.24-4,178.76-1,140.88

Finding the Fourth Proportional to 2,785.24, 4,178.76 and 1,140.88

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Solution

The fourth proportional to 2,785.24, 4,178.76 and 1,140.88 is: 1,711.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.24 : 4,178.76 = 1,140.88 : x
  2. Step 2: Convert to fraction form
    2,785.24/4,178.76 = 1,140.88/x
  3. Step 3: Cross multiply
    2,785.24x = 4,178.76 × 1,140.88
  4. Step 4: Simplify right side
    2,785.24x = 4,767,463.71
  5. Step 5: Solve for x
    x = 4,767,463.71/2,785.24
  6. Step 6: Final answer
    x = 1,711.69

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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.