Home / 2,785.95-4,178.94-1,142.13

Finding the Fourth Proportional to 2,785.95, 4,178.94 and 1,142.13

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Solution

The fourth proportional to 2,785.95, 4,178.94 and 1,142.13 is: 1,713.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,785.95 : 4,178.94 = 1,142.13 : x
  2. Step 2: Convert to fraction form
    2,785.95/4,178.94 = 1,142.13/x
  3. Step 3: Cross multiply
    2,785.95x = 4,178.94 × 1,142.13
  4. Step 4: Simplify right side
    2,785.95x = 4,772,892.74
  5. Step 5: Solve for x
    x = 4,772,892.74/2,785.95
  6. Step 6: Final answer
    x = 1,713.20

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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.