Home / 2,785.60-4,178.32-837.84

Finding the Fourth Proportional to 2,785.60, 4,178.32 and 837.84

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Solution

The fourth proportional to 2,785.60, 4,178.32 and 837.84 is: 1,256.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.60 : 4,178.32 = 837.84 : x
  2. Step 2: Convert to fraction form
    2,785.60/4,178.32 = 837.84/x
  3. Step 3: Cross multiply
    2,785.60x = 4,178.32 × 837.84
  4. Step 4: Simplify right side
    2,785.60x = 3,500,763.63
  5. Step 5: Solve for x
    x = 3,500,763.63/2,785.60
  6. Step 6: Final answer
    x = 1,256.74

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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.