Home / 7,157.56-9,877.76-4,172.92

Finding the Fourth Proportional to 7,157.56, 9,877.76 and 4,172.92

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Solution

The fourth proportional to 7,157.56, 9,877.76 and 4,172.92 is: 5,758.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.56 : 9,877.76 = 4,172.92 : x
  2. Step 2: Convert to fraction form
    7,157.56/9,877.76 = 4,172.92/x
  3. Step 3: Cross multiply
    7,157.56x = 9,877.76 × 4,172.92
  4. Step 4: Simplify right side
    7,157.56x = 41,219,102.26
  5. Step 5: Solve for x
    x = 41,219,102.26/7,157.56
  6. Step 6: Final answer
    x = 5,758.82

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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.