Home / 5,718.36-7,880.64-4,122.24

Finding the Fourth Proportional to 5,718.36, 7,880.64 and 4,122.24

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Solution

The fourth proportional to 5,718.36, 7,880.64 and 4,122.24 is: 5,680.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,718.36 : 7,880.64 = 4,122.24 : x
  2. Step 2: Convert to fraction form
    5,718.36/7,880.64 = 4,122.24/x
  3. Step 3: Cross multiply
    5,718.36x = 7,880.64 × 4,122.24
  4. Step 4: Simplify right side
    5,718.36x = 32,485,911.94
  5. Step 5: Solve for x
    x = 32,485,911.94/5,718.36
  6. Step 6: Final answer
    x = 5,680.98

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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.