Home / 7,157.36-9,880.54-4,771.28

Finding the Fourth Proportional to 7,157.36, 9,880.54 and 4,771.28

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Solution

The fourth proportional to 7,157.36, 9,880.54 and 4,771.28 is: 6,586.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.36 : 9,880.54 = 4,771.28 : x
  2. Step 2: Convert to fraction form
    7,157.36/9,880.54 = 4,771.28/x
  3. Step 3: Cross multiply
    7,157.36x = 9,880.54 × 4,771.28
  4. Step 4: Simplify right side
    7,157.36x = 47,142,822.89
  5. Step 5: Solve for x
    x = 47,142,822.89/7,157.36
  6. Step 6: Final answer
    x = 6,586.62

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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.