Home / 5,696.51-7,861.19-3,178.55

Finding the Fourth Proportional to 5,696.51, 7,861.19 and 3,178.55

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Solution

The fourth proportional to 5,696.51, 7,861.19 and 3,178.55 is: 4,386.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,696.51 : 7,861.19 = 3,178.55 : x
  2. Step 2: Convert to fraction form
    5,696.51/7,861.19 = 3,178.55/x
  3. Step 3: Cross multiply
    5,696.51x = 7,861.19 × 3,178.55
  4. Step 4: Simplify right side
    5,696.51x = 24,987,185.47
  5. Step 5: Solve for x
    x = 24,987,185.47/5,696.51
  6. Step 6: Final answer
    x = 4,386.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.