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Finding the Fourth Proportional to 5,713.68, 7,880.04 and 4,390.64

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Solution

The fourth proportional to 5,713.68, 7,880.04 and 4,390.64 is: 6,055.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,713.68 : 7,880.04 = 4,390.64 : x
  2. Step 2: Convert to fraction form
    5,713.68/7,880.04 = 4,390.64/x
  3. Step 3: Cross multiply
    5,713.68x = 7,880.04 × 4,390.64
  4. Step 4: Simplify right side
    5,713.68x = 34,598,418.83
  5. Step 5: Solve for x
    x = 34,598,418.83/5,713.68
  6. Step 6: Final answer
    x = 6,055.37

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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.