Home / 3,126.40-4,690.26-1,178.62

Finding the Fourth Proportional to 3,126.40, 4,690.26 and 1,178.62

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Solution

The fourth proportional to 3,126.40, 4,690.26 and 1,178.62 is: 1,768.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,126.40 : 4,690.26 = 1,178.62 : x
  2. Step 2: Convert to fraction form
    3,126.40/4,690.26 = 1,178.62/x
  3. Step 3: Cross multiply
    3,126.40x = 4,690.26 × 1,178.62
  4. Step 4: Simplify right side
    3,126.40x = 5,528,034.24
  5. Step 5: Solve for x
    x = 5,528,034.24/3,126.40
  6. Step 6: Final answer
    x = 1,768.18

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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.