Home / 7,157.40-9,876.60-4,173.51

Finding the Fourth Proportional to 7,157.40, 9,876.60 and 4,173.51

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Solution

The fourth proportional to 7,157.40, 9,876.60 and 4,173.51 is: 5,759.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,157.40 : 9,876.60 = 4,173.51 : x
  2. Step 2: Convert to fraction form
    7,157.40/9,876.60 = 4,173.51/x
  3. Step 3: Cross multiply
    7,157.40x = 9,876.60 × 4,173.51
  4. Step 4: Simplify right side
    7,157.40x = 41,220,088.87
  5. Step 5: Solve for x
    x = 41,220,088.87/7,157.40
  6. Step 6: Final answer
    x = 5,759.09

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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.